Update payment profile (order step 2) with a test.

BB-205 #resolve
Base template language on url
Language toggle for guests too
Fix django translations
dropdown menu + interfaceLanguages as array
Store/set language + locale on App
Merge pull request #235 from benkonrath/worthwhile-payment-profile

Update payment profile (order step 2) with a test.
Change translation script + changes after review
Merge branch 'master' into international

Conflicts:
	static/global/js/app.js
Merge pull request #234 from onepercentclub/international

International