URL change: /video -> /videos, added /admin

Changed the resource URLs to be plural for consistency with other
services in edx-platform. Added /admin for standalone running with
"manage.py runserver". Instead of using edxval.urls directly,
runserver now uses a top level urls.py that includes edxval.urls
as well as the debug toolbar and admin.

Switch to using migrations.

Using an older version of migrations to match edx-platform.

Support youtube encoded videos by using a different Profile.

Version conflict with another edx-platform dependency.

Use the correct course_id regex.

Expose course_id to the API

Rest Framework 2.4 requires request for serializers.HyperlinkedModelSerializer

Add authentication and model permission checking to REST API.

added note for profile_name convention

Added subtitle model and API

added create_video/profile to api.py for populating database

create_video and create_profile  will be used to populate database
for internal (not via HTTP requests) use.

Other notes:
-profile_name now has regex validator
-ddt==0.8.0
-100 percent coverage

added setup.py

Added setup.py and manifest.ini, adjusted requirements, and
removed admin.

Other notes:
-djangorestframework>=2.5.14

added pylint

Added pylintrc and pylinted the current code.

Other notes:
-added pylint==1.3.0

tests for PUT functionality

Assigned profile_name to be the identifier for EncodedVideos.
Tests for PUT have been added to check for expected behavior.
Attempting to PUT multiple EncodedVideos with the same profile
will return an error.

Other notes:
-url now accepts dashes
-reduced number of unique constants
-updated api.py tests with HTTP requests
-removed unused repr

POST for single EncodedVideo

POST for EncodedVideo implemented. Can now upload a single Video
with multiple EncodedVideos with profile_name as it's profile.
Cannot do any bulk operations. Serializers have been simplified.
Views are now using genericviews. Queries are now being tracked
in a few tests.

Other notes:
-Added django-debug-toolbar==1.2.1
-constants.py has been reorganized
-api.get_video_info uses new serializer

EncodedVideo part of the upload. Complete EncodedVideo dicts may
now be uploaded. Rejects all EncodedVideos of a Video when there is
an invalid EncodedVideo. Does not reject other Video when a differet
Video is invalid. Currently, EncodedVideo cannot be updated, they can
only be created.

Other notes:
-Added django-debug-toolbar==1.2.1
-constants.py has been reorganized

Initial part of the upload portion of the API. Video Models can
be uploaded via POST as a list of dictionaries. Matching entries
will be updated and new entries will be created. Errors are
returned in a list of tuples with the message and input. Single
entries can be returned by edx_video_id via GET.

Other notes:
-Django Rest Framework upgraded for APIView 2.3.5->2.3.14
-Field "client_title" -> "client_video_id" in the Video Model

Created models for Video, EncodedVideo, and Profile. Added
function to return a serialized video object, with it's
associated EncodedVideo objects.

Other Notes:
-Added djangorestframework==2.3.5
-Added Travis
-Added mock==1.0.1
-Added django-nose==1.2
-Added coverage==3.7.1