Merge of upstream to local repo.
Implemented reply in the comment view page.
Fixing up child replies currently.
Fixed the expanding list view and is able to add replies.
Finished implementing reply to a reply. (Working)
Add finshed with replies on every page associated with replies.
Cleaned up the MainActivity XML
Added sorting message above sorting buttons
Added test framework for Comment class
Added test framework for CommentCache class
Added test framework for CommentController class
Added test framework for CommentControllerInterface class
Added test framework for Commenter class
Added test framework for CommentPageActivity class
Added test framework for CommentViewAdapter class
Added test framework for Favorites class and fixed spelling error in MainActivity XML layout
Added test framework for GeoLocation class
Added test framework for Image class
Added test framework for ReplyViewAdapter class
Added test framework for Thread class