Release Notes for 5-6-14

Doc-331
Switch default instructor dashboard to new dash

LMS-1296
Add banners to the instructor dashboard

Notification banner to default dash to announce the change

Warning banner on legacy instruction dashboard to explain it has been deprecated

LMS-1296
Port spoc gradebook to new instructor dash

LMS-1296
Change URL patterns for instructor dashboard

Fix acceptance and unit tests

LMS-1296
Add segment.io tracking for legacy instructor dashboard

LMS-1296
UI cleanup of new instructor dashboard

Stylize warning banners; more UI touches for the intructor dash:
clean up nav structure, compact header so content is higher on the page

LMS-1296
Release for May 12, 2014
Only show banner on legacy dash for edx.org

LMS-1296
Allow extra fields returned from comments service

Previously, an error was raised if the comments service returned data
including an unexpected field, which unnecessarily complicated the
release path for new features, since the list of allowed fields would
need to be modified before cs_comments_service could be modified, and
only then could edx-platform take advantage of the new CS feature. We
still log a warning if an unexpected field is returned, so we will
still be able to tell if the CS returns a corrupt response.

JIRA: FOR-180
Release notes date fix