Fixing LocalDataManager bug on no initial data.
Adding initial version of AttachmentView.

Does not yet support adding of attachments.
Fixing performance issues on ListView load.

Previously had to do a query to receive child counts, now we only need to
call the .getReplyCount() or .getUpvoteCount() properties.
Adding full screen display of attachment on click.
Implement adding attachments in AttachmentView
Merge pull request #147 from Mobius5150/attachmentsview

Attachments View Implementation
Merge remote-tracking branch 'upstream/master' into question_view-design