Feature/club 1095

Update to translation script in 1%Club to generate translation strings for the new payments and donations apps in Bluebottle.

The translations are stored in the "Core' app in the 1%Club/apps dir. This resource doesn't exist yet (on Transifex) but it will be automatically created with the first push to the Transifex server.

Finally, master/develop and the dev/donations are to much apart (many merge conflicts). Therefore, the translations of the dev/donations branch is not pushed to Transifex yet.