LB-845: Refactor user management by using AngularJS

Added init file.
LB-864: When a blog is closed and the user wants to perform any change, it is not allowed by backend but the user is not properly informed on frontend.

Show/hide closed blog info based on data.
LB-844: "Load more posts" button doesn't appear after a couple of reloads in output without scrollbar (Firefox only)

self should be this.
LB-887: The embed report an error if a blog is closed

Fixed, pulling is removed when the blog is closed.
Merge pull request #296 from eozan/LB-845

Lb 845
Merge pull request #302 from nistormihai/devel

Devel
Merge pull request #299 from petrjasek/lb-864-closed-blog

LB-864: When a blog is closed and the user wants to perform any change, ...