redirect videos through central server; cleanup refactoring of videos.py
making central server side work
moving video download path on central server to be more inline with kalite download
initial DB-based logging of unregistered devices.  Will give us some idea of what's up
extending logic to visiting the registration page
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into central_server_stats

Conflicts:
	kalite/securesync/devices/api_views.py
	kalite/securesync/engine/api_views.py
adding comments, more robust checking for remote IP, adding missing import
fixed bug on tuple output, and mis-referenced field
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into videos_through_central_server

Conflicts:
	kalite/central/urls.py
Merge pull request #615 from bcipolli/videos_through_central_server

Video downloads through the central server
Merge pull request #616 from bcipolli/central_server_stats

initial DB-based logging of unregistered devices
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into develop

Conflicts:
	kalite/central/urls.py
	kalite/main/urls.py
	kalite/main/views.py
	kalite/securesync/devices/api_views.py
	kalite/securesync/engine/api_views.py
	kalite/utils/django_utils/command.py
Merge branch 'develop' of github.com:learningequality/ka-lite into benchmark

Conflicts:
	kalite/main/views.py