dynamically determine user language
changed go urls to hardcoded urls to prevent Safari from breaking
Merge remote-tracking branch 'origin/dev/onepercent-donations' into feature/adapter-language-fix
extended comment
Merge remote-tracking branch 'origin/dev/onepercent-donations' into feature/adapter-language-fix

Conflicts:
	bluebottle/payments_docdata/adapters.py
Merge pull request #1260 from onepercentclub/feature/adapter-language-fix

Feature/adapter language fix