Polish translation
Switch Persona URLs (bug 872168)

This also enables experimental prefixes (bug 850084)
Merge pull request #122 from Witia1/master

Polish translation done
Merge pull request #123 from kumar303/persona-url

Switch Persona URLs (bug 872168)
Fix verifier experimental params (bug 850084)
Log the persona logout
Log redirects to debug @enforce_sequence
Make confirm PIN more sticky (bug 872299)
Merge pull request #124 from kumar303/reset-pin

Make confirm PIN more sticky (bug 872299)
Progress indicators (bug 861133)