Re-add min and target sdk in manifest to silence IDE warnings.
Add preliminary filter and sort menus.
Add xhdpi and mdpi variant of filter icon.
Move sort and filter action items to ShowsFragment menu.

* Also moved strings to resource file.
* Removed old sorting change code.
Remove spinner/tabs show filters.
Move upcoming limit setting to AdvancedSettings.
Rewrote filtering of shows.

* NOTICE: does use hard coded values for filters.
* Also fixed upcoming limit key ref.
Add ShowFilterSettings class.

* New keys for storing current filter values.
Use new ShowFilterSettings in shows loader.
Hide filter action when nav drawer is open.

* Implemented onPrepareOptionsMenu in ShowsFragment.
Add theme dependant filter icon.
Enable filtering of show grid.

* Added filter toggle logic.
* New empty states: no filter, filtered advising to add shows, change
filter.
* Changed layout ids for consistency.
Add actions to show list empty states.

* Touching the empty states now executes their suggested action.
* Changed 'Change the filter' to 'Remove all filters'.
* Increased size (therefore touch target) of empty views, now 200dp
boxes.
Fix: actually return stored upcoming limit.
Filtering for unwatched excludes shows with upcoming episodes.

* If also filtering for upcoming shows this restriction is lifted.
Hide title in ShowsActivity.

* To make room for more action items.
Always show add show and filter buttons.

* Always hide text labels.
* Reordered show menu items.
Implemented show sorting.

* Changed and moved sort orders to new ShowsDistillationSettings.
* Removed old settings key.
* Changed sort order in CheckinActivity.
Change show sort action title.
Clean up unused imports.