updated .gitignore
Added a pop-up window to confirm before deleting the videos
Typo Corrected
separate distributed website (distributed) from topic data (main)
Merge branch 'develop' of github.com:learningequality/ka-lite into distributed-refactor

Conflicts:
	kalite/distributed/views.py
	kalite/updates/management/commands/languagepackdownload.py
	kalite/updates/management/commands/videodownload.py
	kalite/updates/management/commands/videoscan.py
Fixing remaining caching imports, separating tests
Removing calls to logging from fle_utils code
made User Interface and Internationalization changes
remove stray pdb debug line
dont forget to import backend_cache_page
Remove unnecessary test file, move a debug comment.
Adding comments!
Eliminate topicdata - it's obsolete, and doesn't play well with caching anyway.
Merge pull request #1674 from bcipolli/distributed-refactor

Refactor 'main' app into 'distributed' and 'main' apps
Refactoring the config module to fle_utils, to remove KA Lite-specific dependencies from securesync
Moving the chronograph app to fle_utils
Merge pull request #1679 from bcipolli/config-refactor

Refactoring the config module to fle_utils
Merge pull request #1680 from bcipolli/chronograph-refactor

Moving the chronograph app to fle_utils
Fixing bug in serializer reference.
removed cross sign from title bar