Refactoring: migrate from ListActivity to ListFragment for the repository, search, favorites and library activities
Refactoring: migrate from ListActivity to ListFragment for the saved reports activity
Add ResourcesGridFragment that displays resource items in a two-dimensional, scrollable grid
Update version strings to 2.0-SNAPSHOT
Implement switcher between resources list and grid view modes
Implement filter panel with filtering by resource type for search and library activities
Implement sorting by resource name/date and add sort options to the filter panel
Add custom layout for header
Change the subject in the header depending on the activity
Update the title in the header regarding to selected filter options
Refactor the ResourcesListFragment to use universal ResourceLookupArrayAdapter
Refactor the ResourcesGridFragment to use universal ResourceLookupArrayAdapter
Implement left navigation panel for the Repository
Refactor repository architecture to make it work in a the same activity
Restore the repository back stack when activity is recreated
 Intercept the BACK key and make it work with the repository back stack
Implement long press for the BACK key to close the repository immediately
Refactoring: make SearchActivity independent from the obsolete base classes
Refactoring: make FavoritesActivity independent from the obsolete base classes
Implement general handler for resource actions