add some docs

app/src/main/java/org/dystopia/email/ActivityView.java

@@ -717,6 +717,11 @@ public class ActivityView extends ActivityBase
     return intent;
   }
 
+  /**
+   * Get Intent for invite to use SimpleEmail
+   *
+   * @return Intent with share/send action
+   */
   private Intent getIntentInvite() {
     Intent shareIntent = new Intent();
     shareIntent.setAction(Intent.ACTION_SEND);

app/src/main/java/org/dystopia/email/FragmentMessages.java

@@ -1046,6 +1046,12 @@ public class FragmentMessages extends FragmentEx {
     }
   }
 
+
+  /**
+   * Handler when OnRefreshListener is called
+   *
+   * @param args a <code>Bundle</code> with account and folder
+   */
   private void onRefreshHandler(Bundle args) {
     new SimpleTask<Boolean>() {
       @Override