Fix Repository News long press

Performing a long click on a repository news item and selecting one of
the choices did nothing since:
1) The current repository is already being shown
2) There was no viewUser function defined for RepositoryNewsFragment
Merge branch 'newsfix' of git://github.com/sbennett18/android into sbennett18-newsfix
Don't open new activity when viewing an owner of the repo (this can cause issues with deep hierarchy by opening user->user's repo->same user and so on)