Force issuer and use loggedInUser (bug 850084)

Declaring the logged in user is necessary for proper auto-signin.
add in some statsd timings (bug 866942)
bump curling (bug master)
Merge pull request #117 from kumar303/re-force-issuer

Force issuer and use loggedInUser (bug 850084)
Ensure focus fires and log focus event (bug 863328)
Upgrading celery and dependent libraries (bug 825938)

Note: Don't merge until the backend is ready to upgrade rabbitmq.
Bumped billiard for celery upgrade
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)
Merge pull request #115 from muffinresearch/progress-indicators-861133

Progress indicators (bug 861133)
Improved JS pin validation (864703, 865661)
Merge pull request #119 from muffinresearch/only-numerics-864703-865661

Improved JS pin validation (864703, 865661)
Merge pull request #120 from muffinresearch/add-logging-focus-863328

Ensure focus fires and log focus event (bug 863328)