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
adding django admin command to change enrollment
fixing example
Wording for batch beta email add with autoenroll (LMS-2551)
grammar
Added watchdog to Paver requirements
added jj to the author list
fixed retry invokation for calling setState

to successfully call a function with parameters by setTimeout,
it needs to be a function that will be called by setTimeout internally.

this patch actually enables multiple tries for calling the setState function.
bugfix: allow multiple choice questions to display hints
BLD-717: MultipleChoiceResponse i18n.
Merge pull request #3414 from edx/anton/i18n-choice-response

MultipleChoiceResponse i18n.
DOC-264, clarify that students can opt out of email
Merge pull request #3407 from edx/ahodges/documentation/DOC264

Ahodges/documentation/doc264
Merge pull request #3397 from edx/sarina/lms-2551

Wording for batch beta email add with autoenroll (LMS-2551)
DOC-279, correct add discussion category steps

also removed "static" for pages
Merge pull request #3405 from edx/ahodges/documentation/pythonsnippets

DOC-279, correct add discussion category steps
Update codejail to enable logging
Add new languages from Transifex
Merge pull request #3415 from edx/dcs/codejail-version

Update codejail to enable logging