discussion-tab: Make the discussion tab working with the new discussion_app and fix some issues related to the discussion-course xblock.

Course Discussion Page now uses the discussion_app and course context added for the xblock
Merge pull request #78 from aboudreault/discussion-tab

Discussion tab: contains required stuff for the discussion-course xblock
discussion: Update hash
cousemodulecompletion implentation

switch to APIView to support url conventions

merged with master
added new fields to organisation model

added lookup of organisation by user

merged with master
Merge pull request #76 from edx-solutions/ziafazal/course-module-completions

Ziafazal/course module completions
Merge pull request #79 from edx-solutions/ziafazal/add-fields-to-organization

Ziafazal/add fields to organization
mattdrayer/api-orgviewfix: Updated misspelled view name
Merge pull request #81 from edx-solutions/mattdrayer/api-orgviewfix

Mattdrayer/api orgviewfix
put post in list view and remove detail view
ooyala: Update hash
Merge pull request #84 from edx-solutions/ziafazal/course-module-completions-feedback

Ziafazal/course module completions feedback
Updated Group Project XBlock hash
mattdrayer/api-authn-401to403: Changed error response from 401 to 403 Forbidden
Merge pull request #85 from edx-solutions/mjames/update_group_project_xblock

Updated Group Project XBlock hash
Merge pull request #86 from edx-solutions/mattdrayer/api-authn-401to403

Mattdrayer/api authn 401to403
Made small tweak to group project
is_private field and workgroup lookup

added is_private field to workgroup model and lookup of workgroup by
users

added organization field to Project

Fixed broken test
Merge pull request #83 from edx-solutions/ziafazal/users-in-workgroup

Ziafazal/users in workgroup
link orgs to groups

Generated migration