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
Add repsonse pagination to inline discussions
The link to TECH_SUPPORT_EMAIL should have a mailto: protocol !
Temporarily disable CAPA problem "Check" button.

- update appropriate jasmine tests so that stubbed $postWithPrefix
respects a subset of jQuery promise API.
- add customization for checking state.
- display checking state while button is disabled.
- ensure checking state lasts for at least a second.
Add my name!
Updating ORA2 requirements for patch fix
Explicitly declare `tags` in dog stats increment calls
Fix source editor for the case of no CodeMirror editor.

In the HTML component, there is no longer a tabbed CodeMirror Editor. STUD-1516.
Use the correct response when using login.
Merge pull request #3253 from edx/sarina/fix-capa-calls

Explicitly declare `tags` in dog stats increment calls
Merge pull request #3244 from edx/christina/latex-bug-release

Fix source editor for the case of no CodeMirror editor.
Merge pull request #3256 from edx/diana/fix-grading-service-login

Return correct response when using _try_with_login
Remove "Appendix E" from doc title; add warning re: identical URLs for ORA
Revert "updated pdf viewer"

This reverts commit b0a7443570d929e705c295c1511f3188f4e41f69.
Merge pull request #3238 from marcore/master

The link to TECH_SUPPORT_EMAIL should have a mailto: protocol !
Fix i18n'd strings to be easier for translators to understand

Signup modal

Just translate discussion sr text

Markdown editor help

Help modal and reverify dash
Put mailto and em tags outside i18n strings

Signup modal

Contact us form

courseware-error message
Unicode support for course names in reverification flow
Only display active users for the certificate report

Also removes the unnecessary pre-fetch.
For certificate generations we will continue to generate certs for
both active and inactive users.

For the report we only display active users since it was confusing
due to the instructor dashboard only displaying active users.