fix main fixture due to refactoring of updates and i18n
factor out language pack url
fix some syntax errors
move update languages javascript snippet to its own file
fix call to JsonpResponse
Merge remote-tracking branch 'refs/remotes/bcipolli/updates_template_updates' into 853

Conflicts:
	kalite/central/api_views.py
	kalite/templates/updates/update_languages.html
	kalite/updates/management/commands/languagepackdownload.py
Merge branch 'updates_template_updates' of github.com:bcipolli/ka-lite into 853
get languages with subtitles into the dropdown box
get languages with subtitles into the dropdown box
always have the default language as an option in the select box
move global variables into inline javascript
Merge remote-tracking branch 'refs/remotes/origin/853' into 853

Conflicts:
	kalite/static/js/update_languages.js
	kalite/templates/updates/update_languages.html
on client side, call api endpoint to begin languagepack download process
working start_languagepack_download
Merge remote-tracking branch 'refs/remotes/bcipolli/999' into 853

Conflicts:
	kalite/templates/central/homepage.html
check on server if languagepackdownload is finished
create API endpoint for querying what languages are in the current
distributed server
only show languages that are not installed yet
query available languages in the local server using js
Merge remote-tracking branch 'refs/remotes/upstream/release-0.11' into 853