Merge Release 2016-05-24 to Master

Release Candidate rc/2016-05-24

AC-409 adding `lang` attribute to closed-captions and transcript skip links

added name to authors file

Use correct JWT audience when connecting to course discovery.

Course Dashboard Visual Update

Account Settings Navigation

ECOM-4398

ECOM-2981

Two tweaks because we keep django.po and djangojs.po now.

Authentication and Authorization for Cert Rest APIs fixed

Feature/update learner dashboard

Fix date summaries with Unicode format issues.

Support force update param in generate_course_blocks Management Command

ECOM-4007 Add new cert status "unverified" to handle no active user ID verification

Hotfix for BlockStructure data not invalidating upon Course Publish

This issue would show up when date formatting strings are translated
with Unicode characters (like when testing with fake Esperanto
translations).

Got two thumbs up, so merging. 
WL-477 Route direct references to email address configurations through theming.helpers

WL-484: Receipt total bill cell alignment fixed

Bump DnDv2 to v2.0.6

Jibsheet/fixing release to master merge with conflicts

MAYN-230 / Added 2 extra fields for registration 

Connected aside information is included in the emitted event (on check)

AC-406 adding proper aria-labels to HTML sliders in video