title: Android .idea/misc.xml's languageLevel tag keeps changing JDKs
body: <p>The languageLevel key gets changed from JDK_1_8 to JDK_1_7 for reasons I am not aware.</p>
  
  <p>What could be going on?</p>
  
  <p>Does this have something to do with the IDE of other developers working on the project? Maybe they have another Android Studio setting?</p>
  
  <p>Here is what pops up after I notice files under source control have changed:</p>
  
  <pre><code>$ git diff
  diff --git a/.idea/misc.xml b/.idea/misc.xml
  index fbb6828..5d19981 100644
  --- a/.idea/misc.xml
  +++ b/.idea/misc.xml
  @@ -37,7 +37,7 @@
       &lt;ConfirmationsSetting value="0" id="Add" /&gt;
       &lt;ConfirmationsSetting value="0" id="Remove" /&gt;
     &lt;/component&gt;
  -  &lt;component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK"&gt;
  +  &lt;component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK"&gt;
       &lt;output url="file://$PROJECT_DIR$/build/classes" /&gt;
     &lt;/component&gt;
     &lt;component name="ProjectType"&gt;
  </code></pre>
  
  <p>This is my gitignore in case it matters.</p>
  
  <pre><code>.gradle
  /local.properties
  /.idea/workspace.xml
  /.idea/libraries
  .DS_Store
  /build
  /captures
  </code></pre>
  
  <p>How do I proceed so that it just stays one way or the other?</p>