Update bower dependencies.

Bump Ember version to latest. Use more lax versioning.
Update readmes.
Update function signatures.
Fix queryFixtures implementation.

Account for Ember defect. The fixture item type is
inconsistent if the property is a relation.
Update game templates.

Nest an index template through a games outlet.

Also add a header.
Update findGame action.

Add guarding redirect to callToAction.

Add update games transition to use new, dynamic
index route.
Refine game routes.

Nest an index route and update model and
renderTemplate accordingly.
Allow proper registration of nested resource-route templates.

Note: for some reason, its impossible to use a
custom template for a nested route, or at least
the template of its parent. This will register
game.index as game/index.