Add sorting to Studio's Files & Uploads page

Removed old unused images for Building a Course doc

STUD-1012

Added sorting to the new pagination logic for STUD-995.

Updated codejail version

Added rake commands for devstack

architectural documents

Set default section start date to Jan 1, 2030

STUD-1072

Markhoeber/documentation/release notes 1 7 14

Make the release script not fall over when piping data to a file

Fix pagination test failures

Updates for 1-7-2014 release changes in Studio -- Outline and Files pages

Improve accessibility of forum vote buttons

integrated Sylvia's edits

Updated the pagination tests to no longer use the toy course, but to instead explicitly upload the assets it needs.

 Added a new AssetsTestCase base class to own shared helper methods.

Use <span> for course preview’s university #os

Fix STUD-1129: handle out-of-range page numbers

Fixing merge for sylvia's branch bld-615

Fixing merge for sylvia's branch bpd-615

Tests for behavior of export with & in HTML and XML-based components

Improvements to the i18n workflow tools.

Fix STUD-1129: handle out-of-range page numbers

Now any of the plurals being missing will count as an Empty translation,
and for looking at tags, the two English strings and all the translated
strings are mooshed together.

The tests in test_validate.py now examine the messages to see that they
have the right structure.  The English and the translation should have
the same tags, the translation can't be blank, and it can't have any
Astral plane characters.

Miscellaneous fixes to strings found during i18n work.

Logging to catch duplicate instructor tasks

Assign valid content_type to static resource (import_static_content)