Added so we can select a game group.
Removed the "Signed in as whoever" text in the menu bar.
Added game groups to the menu.
Shows the currently selected GameGroup in the nav bar.
Skipping this for now.
We need to find a way to get it there without accessing the controller
directly.

Revert "Shows the currently selected GameGroup in the nav bar."

This reverts commit b24eb2740b0043da2880b27bdb1fa384d548fb7b.
Merge pull request #6 from brange/master

Some small missing features for the GameGroups