Updates to review file view model and associated classes
Merge branch 'master' of http://github.com/snydergp/review.git

Conflicts:
	review/src/main/java/com/snyder/review/client/viewmodel/review/CommentViewModel.java
	review/src/main/java/com/snyder/review/client/viewmodel/review/CommentViewModelImpl.java
	review/src/main/java/com/snyder/review/client/viewmodel/review/ReviewFileViewModelImpl.java