Detached categories don't access control on date
Certs - bugfix cert_whitelist output

* output after cert_whitelist -a or -d purported to be the whitelist entries
  for the requested course, but in fact were all of the entries in every
  course. This commit fixes that.
add undo (resub) to landing page of forum unsub link
add undo (resub) to landing page of forum unsub link
Merge pull request #2209 from edx/db/lms_date_agnostic

Detached categories don't access control on date
Make i18n a real package.
Merge pull request #2232 from edx/ned/i18n-tool-improvements

Make i18n a real package.
Change i18n contact address
Merge pull request #2233 from edx/sarina/change-contact-email

Change i18n contact address
Add CookieStorage.
Move README to docs.
Change i18n contact address
Merge pull request #2240 from edx/sarina/fix-bug

Change i18n contact address
Minor copy change requested by linkedin.
Merge pull request #2214 from zubair-arbi/zub/story/std1183-staticpagestest

enable tests depending on assert is_css_present(css_selector)
Textbooks accessibility changes

Removed image-based textbook info from XML tutorial.

Added not about accessibility and textbooks to Building a Course file.
Update zooming image tool info and add image
Merge pull request #2242 from edx/sylvia/documentation/BLD-630

Sylvia/documentation/bld 630
Create mapping for previously unmapped locations in order to get
course_id

STUD-1212
Make the dev docs work on readthedocs.org