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
Assign valid content_type to static resource (import_static_content)
STUD-878
Merge pull request #1912 from edx/andy/asset-pagination

Add pagination to Studio's Files and Uploads page.

These changes are for STUD-813.
Added django commands to get statistics and repost submissions to grader for open ended problems.
ORA-286
Merge pull request #2076 from edx/brian/server-track-null-request

Modify server_track to handle being called without a request.
Don't catch all exceptions.
Merge pull request #2082 from edx/ned/dont-catch-all-exceptions

Don't catch all exceptions.
Initial PR for verified cert reporting

Refactored from code in Stanford's itemized revenue reports into a new Report class used for all revenue-related reporting.

Models for all cert types complete; test coverage for half of cert types complete.

If this architecture is deemed solid, the next steps are to add a reasonable UI folks will use to select reports to download, allow them to restrict based on dates/universities, and of course complete test coverage.
Fixed CertificateStatusReportModel
Fixed UniversityRevenueShare model
Refactored tests
Migrations
Initial view
Response to CR
Template changes
Response to CR
More response to CR
Merge pull request #2001 from edx/waheed/openended-problems-commands-2

Django command to post submissions to ora