Adds a dropdown containing matches to chose from.
User can switch between games.
Adds LocalMatchMenuItem
along with changes to use it even though it is not used yet.
Also change GameFragment to try to maintain the stored GoGame when leaving the screen.
Save current turnBasedMatch when leaving the screen.
Also fixes a weird fragment navigation bug by removing the navigation stack in new local game creation (i.e. we can't go back from a local game to the configuration).
Reloads the list on takeTurn.
Also Change "Create New Game" to "New Game" so local games title still look ok even now that we can only have one at a time and they don't appear in the match list.
Review updates
Merge pull request #110 from cauchymop/matches_dropdown

Adds a dropdown containing matches to chose from.