Forums visual styling adjustments

Add test in import code to make sure two overlapping courses aren't imported

install and set up paver before using it

Switch PDF Textbooks to use portable URLs

bug fix - wrong problem name

doc-289

Fix note formatting problem in JSInput doc

Update label information; correct typo; add XML to PWAH

XBlocks are something initialized before all resources (url) are loaded

Wraps long lines in bulk email messages.

Disable flaky video test

AN-900: new event types for PDFs

Add information about per-criterion feedback

RFC 2822 states that line lengths in emails must be less than 998.
Some MTA's add newlines to messages if any line exceeds a certain
limit (the exact limit varies). Sendmail goes so far as to add
'!\n' after the 990th character in a line. To ensure that bulk
mail messages look consistent long lines are wrapped to a
conservative length.

LMS-1466

Run Code infinite queueing fix. BLD-994.

Added code to remove css on closing cheatsheet.

visual styling adjustments to discussion listing metadata, simplifying the visual representation of votes, increasing the line height of each post while also increasing the size of the icons for following and comments. visual styling adjustments also included for the discussion itself, pushing comments to be full width within a response, and small typography adjustments to the post count metadata and the add response button

HTML Editor Changes - Raw Editor

stud-1566

Removed evil HEAD line

Ahodges/documentation/lms2476

add acceptance tests for user profile pagination.

Merging release back to master

DOC-275, location & Language columns

additional small typos and fixes

Experiment with cell widths to see if images will appear