learningequality/ka-lite — pull request #175 by gimick (2013-06-28 17:16:12+00:00)
Title: speedup topic tree when videos have not been downloaded yet

Ticket #173 If there are no videos downloaded, the root of all knowledge is quite slow on raspberry pi (+90 seconds delay).
This pull request reduces the load time to approx 5 seconds, by removing the fall-back mode which directly reads the database if there are no currently downloaded videos.