initial implementation, using hacky database way
removed pdb; added logging info; renamed template var to video_exist; removed extra char from template
implemented direct filesystem method for accessing video counts, use by default
tweaking UI to be a bit more reasonable for found videos
Made the unavailable video title to grey and inactive their hyperlink effect.
Make the text translateable.
Merge pull request #1 from wangguan59/moviecounts

Made the unavailable video title to grey and inactive their hyperlink ef...
removed extraneous space
fixing bug that prevented caching; now caches across requests
greying out links (but still linkable), removing text-based video info.
Merge remote-tracking branch 'upstream/develop' into moviecounts

Conflicts:
	kalite/settings.py
Merge remote-tracking branch 'upstream/develop' into moviecounts
Merge remote-tracking branch 'upstream/develop' into moviecounts
Merge branch 'moviecounts' of github.com:bcipolli/ka-lite into moviecounts
Merge remote-tracking branch 'origin/performance' into moviecounts

Conflicts:
	kalite/main/topicdata.py
	kalite/main/views.py
	kalite/settings.py
	kalite/templates/homepage.html
	kalite/templates/topic.html
updates to efficiently check if any video counts need to be updated.
Merge branch 'performance' into moviecounts

Conflicts:
	kalite/settings.py
removing pdb ... again... and removing double-call to invalidate cache.
now templates are automatically invalidated and regenerated in the video scripts
Merge branch 'performance' into moviecounts

Conflicts:
	kalite/settings.py