update quetzal
Merge pull request #306 from terwey/master

Upgrade tutorial
CS-4704: add subscriptions to mapping
Merge pull request #307 from ahilles107/CS-4704_subsciption_manager

CS-4704: add subscriptions to mapping
update all themes
fix perms, add new settings to sample data
Merge pull request #305 from ahilles107/update_themes

update themes
add missing article types
add keep longtext as deck type in article type news
Merge pull request #309 from ahilles107/update_themes

Update themes