Merge pull request #739 from benkonrath/bug-fixes-improvements

Set donation to failed when payment cancelled on closed orders.
Fix some issues with login/activation + orders
Merge pull request #740 from gannetson/fixes-for-donation-flow

Fix some issues with login/activation + orders
Save & next for pitches
Code style & sender address
Merge pull request #741 from gannetson/fixes-for-donation-flow

Fixes for donation flow
Deal with lang-country codes (e.g. 'en-us') in money l10n.