make embargo template theme-able

Use "Stanford-style" theming to enable you to put your own embargo
notice up.
missing themed embargo page fails safely to unthemed
Fix missing call to translate in shoppingcart model
Fix missing call to translate for shopping cart btn
pass event to callback functions in membership.coffee (LMS-2547)
Fix missing call to translate in receipt page
Render markup in inline threads on expand/collapse

This was a bug in 3af90ef.
Merge pull request #3389 from edx/hotfix/2014-04-17a

Render markup in inline threads on expand/collapse
Merge pull request #3392 from edx/release

Release
Update bok-choy page definitions
Wording for batch beta email add with autoenroll (LMS-2551)
Merge pull request #3366 from IONISx/missing-translations

Missing translations
Merge pull request #3385 from edx/adam/add-event

pass event to callback functions in membership.coffee (LMS-2547)
set reasonable SERVICE_VARIANT based on command line; ensure theme passed to coffeescript also;
Merge pull request #3387 from edx/zoldak/update_page_objects

Update bok-choy page definitions
remove theme_paths var, per @sefk
fix class var; set SERVICE_VARIANT to lms by default if unset (helps "paver --help" work cleanly)
Merge pull request #3094 from yarko/yarko/fix-paver-env-assets

ensure SERVICE_VARIANT set; pass theme to coffeescript;
bugfix: allow multiple choice questions to display hints
BLD-717: MultipleChoiceResponse i18n.