Workaround pagedown not able to be minified. Fixes #118
Merge remote-tracking branch 'origin/master' into activity-admin
add title field to unit
Fixes #121 removes english option from LANGUAGES
add 'name' field to video in admin form, this field is mandatory to create new unit
Merge remote-tracking branch 'origin/master' into activity-admin
enable user to create units in admin page