Add options to dump_course_structure to output inherited metadata.
Add tests for inherited metadata to test_dump_course, and move to commands/tests dir.
Studio: adds in developer-centric Sass file
* provides new .scss file for developers to add temporary/in-progress Sass for further refactor/polish
* cleans up note/import order in shame and application Sass files
LMS: adds in developer-centric Sass file
* provides new .scss file for developers to add temporary/in-progress Sass for further refactor/polish
* cleans up note/import order in all application scss files
Merge pull request #2047 from edx/talbs/studio-devscss

Studio: Developer-centric Sass Area
Merge pull request #2046 from edx/talbs/lms-devscss

LMS: Developer-centric Sass Area
Merge pull request #2008 from edx/brian/dump-inherited-metadata

Add options to dump_course_structure to output inherited metadata.
Modify server_track to handle being called without a request.
Add pagination to Studio's Files and Uploads page

These changes implement STUD-813. The commit consists of the
following logical changes:
 - a REST API has been implemented for a course's assets
 - the page itself now fetches the assets client-side
 - the Backbone.Paginator library is used to support pagination
 - the AssetCollection has been refactored to extend
   Backbone.Paginator.requestPager so that it can be paged
 - an abstract PagingView class has been added to generalize
   the communication with a paging REST API
 - the AssetsView has been reimplemented to extend PagingView
 - two new child views have been added:
   - PagingHeader: the paging controls above the list of assets
   - PagingFooter: the paging controls below the assets
Add myself to list of authors
Merge pull request #1912 from edx/andy/asset-pagination

Add pagination to Studio's Files and Uploads page.

These changes are for STUD-813.
Merge pull request #2076 from edx/brian/server-track-null-request

Modify server_track to handle being called without a request.