fix submitting from review action

- submit must happen after review (got broken because of asynchronous Gerrit operations)
- submit-action: change info is enough to get id (change details are not required)
fixes and improvements for file comments

- load comments asynchronously
- display newly created comments (in review comment sink) in corresponding file only
- show comment action and comments also after switching to next file (instead of opening review dialog again)
Merge remote-tracking branch 'origin/master' into intellij13

Conflicts:
	src/main/java/com/urswolfer/intellij/plugin/gerrit/ui/diff/CommentsDiffTool.java
	src/main/java/com/urswolfer/intellij/plugin/gerrit/ui/diff/CustomizableFrameDiffTool.java