Work started on 5.3.3

[pulsecms]

Based on a great request by @ezchile (and others), we've got the Featured Image selector for Blog posts wired up.

Preview of how this is looking

https://user-images.githubusercontent.com/4608547/57959968-4d67e380-7941-11e9-8e85-95b8d30ae20e.gif(image larger than 4 MB)

Ref:

Recent post visual

Glad it's working! Yes the quotes are added for readability but are optional (there's a note in the manual about it) They were added as without the longer tags such as the Blog might be unreadable.