close communities when user is banned
Move member management to CommunityMembershipsCtrl

- Move from Admin::CommunitiesController to
  Admin::CommunityMembershipsController
feature: when banning a person, check that his/hers listings are closed
added a comment about paperclip (makes it easier to find stuff)
Preauthorize form improvements
Automatic confirmation for preauthorized payments
Login helper cleanup
Add tests for missing payment details with preauth
ParamsConstraints
Remove duplicated Braintree code
removed one inverse_of which seemd to cause loop in rails callbacks
Less margin after details header
Marketplace customization options doc
Old community creation view code cleanup
Move h2 styling away from .page-content
Clean BraintreeAPI.transaction_sale
Indent When and Then steps with 1 space, And with 2 spaces
Fix duplicate confirmation message
Improve preauthorize emails
Submit for settlement