add a small link, only visible when online, for bulk download info
Translate, change text a bit
Merge remote-tracking branch 'upstream/develop' into bulk_video_download
tell them if they are offline
Merge remote-tracking branch 'origin/test_runner' into bulk_video_download
live server tests don't run if MEDIA_URL and STATIC_URL point to the same place (4th time I've fixed this, across branches)
Merge branch 'test_runner' into bulk_video_download
more robust am_i_online, use template code instead of script, include tests
Merge branch 'bulk_video_download' into admin_debugonly
implement a more direct check
Merge branch 'bulk_video_download' into admin_debugonly
remove online messages when offline; link to adding a group (always) and allow viewing of ungrouped users (always)
Merge remote-tracking branch 'origin/admin_debugonly' into central_server_stats

Conflicts:
	kalite/main/tests/__init__.py
	kalite/main/views.py
	kalite/securesync/api_client.py
	kalite/settings.py
	kalite/templates/admin_distributed.html
	kalite/templates/central/landing_page.html
	kalite/templates/current_users.html
rearranging code to play nice across distributed and central servers