Fix desktop notifications.
v1.2.12 version bump.
Some restyling of settings page, minor fixes for themes.
Merge pull request #8 from lightsoda/master

Some restyling of settings page, minor fixes for themes.
v.1.2.13 - version bump and credits update.
Remove unnecessary permissions.

The upcoming_json added ACAO header, so no longer need user to grant
giantbomb.com access permission.