Initial Offercast Setup, incomplete
offercast proof of concept integration works, just gotta see if there's a better place to initialize, seems to work fine on this place.
Moving to a better place, right before a resume or setting wizard appearance.
AdMob gone, New Donations View, refactors.

AboutFragment used to have a DonateButtonListener and an extension of
some sort of Purchase Listener.

I refactored all that logic into a Biller class, that I can use inside
AboutFragment and elsewhere.

However, I can't test because damn android won't create a resource id
for my new view. Looking for issues on the new XML to see why this is
happening.
logic fixes
Donations view in place.
DRY refactors worked, same code of the Biller works also on donations
buttons in the about screen.
Support FrostWire component at the bottom of transfers activity
donations layout will fit all the way down to 240p wide
Merge branch 'offercast'