diff --git a/.gitignore b/.gitignore
index 17c5afc..51563ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,6 @@
 
 # Ignore master key for decrypting credentials and more.
 /config/master.key
+
+# IDEA
+.idea/
diff --git a/.idea/misc.xml b/.idea/misc.xml
deleted file mode 100644
index 639900d..0000000
--- a/.idea/misc.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index d5de91a..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/turniere-backend.iml" filepath="$PROJECT_DIR$/turniere-backend.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 35eb1dd..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
deleted file mode 100644
index f48c1e9..0000000
--- a/.idea/workspace.xml
+++ /dev/null
@@ -1,346 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ChangeListManager">
-    <list default="true" id="a70d862e-5668-46ed-817a-f3a756158a43" name="TURNIERE-63 Rewrite Backend in Ruby" comment="" />
-    <list id="67c7000a-2973-4ce5-b1e6-9fc28d9a6243" name="Default Changelist" comment="" />
-    <ignored path="$PROJECT_DIR$/.bundle/" />
-    <ignored path="$PROJECT_DIR$/components/" />
-    <ignored path="$PROJECT_DIR$/public/system/" />
-    <ignored path="$PROJECT_DIR$/tmp/" />
-    <ignored path="$PROJECT_DIR$/vendor/bundle/" />
-    <ignored path="$PROJECT_DIR$/vendor/cache/" />
-    <ignored path="$PROJECT_DIR$/out/" />
-    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
-    <option name="SHOW_DIALOG" value="false" />
-    <option name="HIGHLIGHT_CONFLICTS" value="true" />
-    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
-    <option name="LAST_RESOLUTION" value="IGNORE" />
-  </component>
-  <component name="DarkyenusTimeTracker">
-    <option name="naggedAbout" value="1" />
-  </component>
-  <component name="FUSProjectUsageTrigger">
-    <session id="-580199293">
-      <usages-collector id="statistics.lifecycle.project">
-        <counts>
-          <entry key="project.closed" value="5" />
-          <entry key="project.open.time.13" value="1" />
-          <entry key="project.open.time.2" value="2" />
-          <entry key="project.open.time.4" value="1" />
-          <entry key="project.open.time.8" value="1" />
-          <entry key="project.opened" value="5" />
-        </counts>
-      </usages-collector>
-      <usages-collector id="statistics.file.extensions.open">
-        <counts>
-          <entry key="rb" value="7" />
-          <entry key="ru" value="1" />
-        </counts>
-      </usages-collector>
-      <usages-collector id="statistics.file.types.open">
-        <counts>
-          <entry key="Ruby" value="8" />
-        </counts>
-      </usages-collector>
-      <usages-collector id="statistics.file.extensions.edit">
-        <counts>
-          <entry key="jql" value="24" />
-        </counts>
-      </usages-collector>
-      <usages-collector id="statistics.file.types.edit">
-        <counts>
-          <entry key="JQL" value="24" />
-        </counts>
-      </usages-collector>
-    </session>
-  </component>
-  <component name="FileEditorManager">
-    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/controllers/application_controller.rb">
-          <provider selected="true" editor-type-id="text-editor" />
-        </entry>
-      </file>
-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/models/application_record.rb">
-          <provider selected="true" editor-type-id="text-editor" />
-        </entry>
-      </file>
-      <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/app/models/user.rb">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="221">
-              <caret line="13" selection-start-line="13" selection-end-line="13" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/app/jobs/application_job.rb">
-          <provider selected="true" editor-type-id="text-editor" />
-        </entry>
-      </file>
-    </leaf>
-  </component>
-  <component name="Git.Settings">
-    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
-    <option name="RECENT_BRANCH_BY_REPOSITORY">
-      <map>
-        <entry key="$PROJECT_DIR$" value="master" />
-      </map>
-    </option>
-  </component>
-  <component name="JsBuildToolGruntFileManager" detection-done="true" sorting="DEFINITION_ORDER" />
-  <component name="JsBuildToolPackageJson" detection-done="true" sorting="DEFINITION_ORDER" />
-  <component name="JsGulpfileManager">
-    <detection-done>true</detection-done>
-    <sorting>DEFINITION_ORDER</sorting>
-  </component>
-  <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="758" />
-    <option name="width" value="786" />
-    <option name="height" value="859" />
-  </component>
-  <component name="ProjectView">
-    <navigator proportions="" version="1">
-      <foldersAlwaysOnTop value="true" />
-    </navigator>
-    <panes>
-      <pane id="ProjectPane">
-        <subPane>
-          <expand>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-              <item name="controllers" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-              <item name="jobs" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-              <item name="mailers" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-              <item name="models" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-              <item name="views" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="turniere-backend" type="b2602c69:ProjectViewProjectNode" />
-              <item name="turniere-backend" type="462c0819:PsiDirectoryNode" />
-              <item name="app" type="462c0819:PsiDirectoryNode" />
-              <item name="views" type="462c0819:PsiDirectoryNode" />
-              <item name="layouts" type="462c0819:PsiDirectoryNode" />
-            </path>
-          </expand>
-          <select />
-        </subPane>
-      </pane>
-      <pane id="PackagesPane" />
-      <pane id="RailsProjectView" />
-      <pane id="Scope" />
-    </panes>
-  </component>
-  <component name="PropertiesComponent">
-    <property name="WebServerToolWindowFactoryState" value="false" />
-    <property name="aspect.path.notification.shown" value="true" />
-    <property name="last_opened_file_path" value="$PROJECT_DIR$/../gem/turniere" />
-    <property name="nodejs_interpreter_path.stuck_in_default_project" value="/usr/bin/node" />
-    <property name="nodejs_npm_path_reset_for_default_project" value="true" />
-    <property name="settings.editor.selected.configurable" value="tasks.servers" />
-  </component>
-  <component name="RunDashboard">
-    <option name="ruleStates">
-      <list>
-        <RuleState>
-          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
-        </RuleState>
-        <RuleState>
-          <option name="name" value="StatusDashboardGroupingRule" />
-        </RuleState>
-      </list>
-    </option>
-  </component>
-  <component name="SpringUtil" SPRING_PRE_LOADER_OPTION="true" />
-  <component name="SvnConfiguration">
-    <configuration />
-  </component>
-  <component name="TaskManager">
-    <task id="Default" summary="Default task">
-      <branch name="master" repository="$PROJECT_DIR$" original="true" />
-      <changelist id="67c7000a-2973-4ce5-b1e6-9fc28d9a6243" name="Default Changelist" comment="" />
-      <created>1540985236499</created>
-      <option name="number" value="Default" />
-      <option name="presentableId" value="Default" />
-      <updated>1540985482306</updated>
-      <workItem from="1540985241200" duration="240000" />
-    </task>
-    <task active="true" id="TURNIERE-63" summary="Rewrite Backend in Ruby">
-      <branch name="master" repository="$PROJECT_DIR$" />
-      <changelist id="a70d862e-5668-46ed-817a-f3a756158a43" name="TURNIERE-63 Rewrite Backend in Ruby" comment="" />
-      <created>1540806299000</created>
-      <option name="issue" value="true" />
-      <url>https://jiratinf16b4.it.dh-karlsruhe.de:8443/browse/TURNIERE-63</url>
-      <option name="number" value="63" />
-      <option name="presentableId" value="TURNIERE-63" />
-      <option name="project" value="TURNIERE" />
-      <updated>1540985482338</updated>
-      <workItem from="1540985483256" duration="120000" />
-      <workItem from="1541233604769" duration="546000" />
-      <workItem from="1541510627505" duration="595000" />
-      <workItem from="1541511436015" duration="129000" />
-      <workItem from="1541591328964" duration="1281000" />
-    </task>
-    <option name="createBranch" value="false" />
-    <option name="useBranch" value="true" />
-    <servers>
-      <JIRA url="https://jiratinf16b4.it.dh-karlsruhe.de:8443">
-        <option name="apiType" value="REST_2_0" />
-        <password>dfe9df9ddfdcdfc1dff4dfc2dffddf80dfcbdfc6dfe8df89df9bdfe9df93dfc1df93df80dffcdfc0dfd0dfdddf9ddfe2dfdedfc2dfe5df92dff4dfdddf8fdf89dfcfdf99dfc5</password>
-        <option name="jiraVersion" value="7.12.1" />
-        <option name="searchQuery" value="resolution = Unresolved and project=&quot;TURNIERE&quot; order by updated" />
-        <username>malaber</username>
-      </JIRA>
-    </servers>
-  </component>
-  <component name="TimeTrackingManager">
-    <option name="enabled" value="true" />
-    <option name="totallyTimeSpent" value="2911000" />
-    <option name="suspendDelayInSeconds" value="120" />
-  </component>
-  <component name="ToolWindowManager">
-    <frame x="-4" y="0" width="1608" height="864" extended-state="6" />
-    <editor active="true" />
-    <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.11261261" />
-      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info id="Designer" order="2" />
-      <window_info id="Favorites" order="3" side_tool="true" />
-      <window_info anchor="bottom" id="Message" order="0" />
-      <window_info anchor="bottom" id="Find" order="1" />
-      <window_info anchor="bottom" id="Run" order="2" />
-      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
-      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
-      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
-      <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="bottom" id="Docker" order="7" />
-      <window_info anchor="bottom" id="Version Control" order="8" sideWeight="0.4993565" visible="true" weight="0.32959327" />
-      <window_info anchor="bottom" id="Database Changes" order="9" show_stripe_button="false" />
-      <window_info anchor="bottom" id="Terminal" order="10" sideWeight="0.4993565" weight="0.32959327" />
-      <window_info anchor="bottom" id="Event Log" order="11" sideWeight="0.5006435" side_tool="true" weight="0.32959327" />
-      <window_info anchor="right" id="Commander" order="0" weight="0.4" />
-      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
-      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
-      <window_info anchor="right" id="Time Tracking" order="3" weight="0.68266666" />
-      <window_info anchor="right" id="LuaJ" order="4" />
-      <window_info anchor="right" id="Database" order="5" />
-      <window_info anchor="right" id="Palette&#9;" order="6" />
-      <window_info anchor="right" id="Maven Projects" order="7" />
-    </layout>
-  </component>
-  <component name="TypeScriptGeneratedFilesManager">
-    <option name="version" value="1" />
-  </component>
-  <component name="Vcs.Log.Tabs.Properties">
-    <option name="TAB_STATES">
-      <map>
-        <entry key="MAIN">
-          <value>
-            <State>
-              <option name="RECENTLY_FILTERED_USER_GROUPS">
-                <collection />
-              </option>
-              <option name="RECENTLY_FILTERED_BRANCH_GROUPS">
-                <collection />
-              </option>
-              <option name="COLUMN_ORDER">
-                <list>
-                  <option value="0" />
-                  <option value="1" />
-                  <option value="2" />
-                  <option value="3" />
-                </list>
-              </option>
-            </State>
-          </value>
-        </entry>
-      </map>
-    </option>
-  </component>
-  <component name="VcsContentAnnotationSettings">
-    <option name="myLimit" value="2678400000" />
-  </component>
-  <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/config.ru">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/config/routes.rb">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/config/spring.rb">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/mailers/application_mailer.rb">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="68">
-          <caret line="4" lean-forward="true" selection-start-line="4" selection-end-line="4" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/controllers/application_controller.rb">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/models/application_record.rb">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/jobs/application_job.rb">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
-    <entry file="file://$PROJECT_DIR$/app/models/user.rb">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="221">
-          <caret line="13" selection-start-line="13" selection-end-line="13" />
-        </state>
-      </provider>
-    </entry>
-  </component>
-  <component name="masterDetails">
-    <states>
-      <state key="ProjectJDKs.UI">
-        <settings>
-          <last-edited>1.8</last-edited>
-          <splitter-proportions>
-            <option name="proportions">
-              <list>
-                <option value="0.2" />
-              </list>
-            </option>
-          </splitter-proportions>
-        </settings>
-      </state>
-    </states>
-  </component>
-</project>
\ No newline at end of file
diff --git a/turniere-backend.iml b/turniere-backend.iml
deleted file mode 100644
index 1382e87..0000000
--- a/turniere-backend.iml
+++ /dev/null
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="RUBY_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="RailsFacetType" name="Ruby on Rails">
-      <configuration>
-        <RAILS_FACET_CONFIG_ID NAME="RAILS_FACET_SUPPORT_REMOVED" VALUE="false" />
-        <RAILS_FACET_CONFIG_ID NAME="RAILS_TESTS_SOURCES_PATCHED" VALUE="true" />
-        <RAILS_FACET_CONFIG_ID NAME="RAILS_FACET_APPLICATION_ROOT" VALUE="$MODULE_DIR$" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/spec" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/.bundle" />
-      <excludeFolder url="file://$MODULE_DIR$/components" />
-      <excludeFolder url="file://$MODULE_DIR$/public/system" />
-      <excludeFolder url="file://$MODULE_DIR$/tmp" />
-      <excludeFolder url="file://$MODULE_DIR$/vendor/bundle" />
-      <excludeFolder url="file://$MODULE_DIR$/vendor/cache" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-  <component name="RModuleSettingsStorage">
-    <LOAD_PATH number="0" />
-    <I18N_FOLDERS number="1" string0="$MODULE_DIR$/config/locales" />
-  </component>
-</module>
\ No newline at end of file