Auto-complete tags in quest form

[fetsh]

To avoid typos or duplicates, like singular/plural tags, and needless typing, tags should have auto-completion.

I'm not sure of which type: global (like stackoverflow), or per user (like tumblr).

[berekuk]

Yes. I already have a quest for this: http://questhub.io/realm/meta/quest/51b9cfced87f86207d000005.