Add Offline Guides button to no connection dialog
Picasso: Upgrade to 2.2.0

This fixes a strange bug where certain images weren't being displayed
https://github.com/square/picasso/issues/249#issuecomment-33259920
Upgrade various dependencies

Found all of the ones with updates and bumped the versions.
Set ProgressButton background to light grey

For some reason it changes from light grey to white when setPinned(true)
is called...
Remove a few outdated comments