Ensure english language pack upon migration.
changing version to 0.10.3
Fixes css issue in #1209
Call code to move subtitles from old location to new, from setup / update
sort available language packs
Merge branch 'release-0.10.3' of github.com:learningequality/ka-lite into move_old_subtitles
fixing i18n imports that were breaking setup command
Merge pull request #1256 from bcipolli/move_old_subtitles

Call code to move subtitles from old location to new, from setup / update