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
Merge branch 'test_runner' into bulk_video_download
more robust am_i_online, use template code instead of script, include tests
implement a more direct check
Merge remote-tracking branch 'upstream/develop' into bulk_video_download

Conflicts:
	kalite/main/tests/__init__.py
	kalite/main/views.py
using messages instead of another warning type.  Fixed nits from code review.
Merge pull request #112 from bcipolli/bulk_video_download

Bulk video download link