Some revisionism to allow migration history to be run on InnoDB database.
Merge branch 'develop' of github.com:learningequality/ka-lite into develop
Capitalize the native names of the supported languages.
Three unregistered bugs.
1426: allow forcing of language pack version
solve #1400: Skip interface translations if crowdin is null
Merge pull request #1425 from aronasorman/1400

solve #1400: Skip interface translations if crowdin is null
Merge pull request #1423 from aronasorman/1406

1406: Capitalize the native names of the supported languages.
use lcode_to_ietf for comparing lang codes when fetching flat topic tree
Merge pull request #1431 from aronasorman/1399

use lcode_to_ietf for comparing lang codes when fetching flat topic tree
use lcode_to_ietf for comparing lang codes when fetching flat topic tree
some cleanup and updating of urls for generate_dubbed_video_mapping
Merge pull request #1438 from aronasorman/1399

Update the url of dubbed_video_mappings
Merge pull request #1429 from bcipolli/1426

1426: allow forcing of language pack version
Merge pull request #1428 from bcipolli/three_bugs

Fix three important, but small bugs