CFD-156: Quick post Form should be collapsed when content is saved

#222 

Onload: Hidden the title field like the [here](https://projects.invisionapp.com/d/main#/console/1420103/33180498/preview)
![selection_006](https://cloud.githubusercontent.com/assets/7369740/5126768/4d2521a6-70d8-11e4-9c74-4f4155888a93.png)

Onsave: Collapsing the form
![selection_007](https://cloud.githubusercontent.com/assets/7369740/5126777/5ad269e4-70d8-11e4-8cef-f78bfa0fcb8a.png)
 

Add comment that this actually collapses...