Merge pull request #851 from onepercentclub/feature/book-671-create-payment

Payment creation (Ember) BOOK-671
CLUB-670 Donation modal with validation field, and errors
Merge pull request #852 from onepercentclub/feature/book-671-create-payment

Fixes for donation to payment step
CLUB-670, fixes
CLUB-670 fixing changeAmount buttons
CLUB-670 fixes
Merge pull request #853 from onepercentclub/feature/CLUB-670

Feature/club 670
Merge remote-tracking branch 'upstream/feature/fund-loving-criminals' into feature/book-688-show-latest-project-donations

Conflicts:
	bluebottle/bb_donations/static/js/bluebottle/bb_donations/models.js