changed BrowseFragment to inherit from SherlockFragment, not SherlockListFragment
update SearchActivity to not use ListActivity
removed unneeded MPDApplication objects; they're inherited from BrowseFragment
removed unneeded extra call to UpdateList in PlaylistsFragment
removed methods which just call super
whitespace cleanup
Merge pull request #220 from mafrosis/fragment-refactors

Fragment refactors (part one)