Feature/cale/maintain dev environment

Make the externally facing asset watch commands wait for user intervention, and add internal tasks that only run as long as the rake process

Move Mysql and scipi to requirements/post.txt, because they require the contents of requirements.txt to be completely installed

Add documentation of xmodule template files

Allow django liveserver to use larger port range

Make gcli commands flexible around org and repo name

Use one virtualenv for each parallel build process

fix broken tests. Also drive by fix for the sporadic failure on tests wh...

fix broken tests. Also drive by fix for the sporadic failure on tests which may go to a textbook page. The URL formatting was incorrect in the test

word cloud: fix pylint warnings, fix word cloud test

Fix "Course Updates" page

Studio Front End Development Clean-up