LB-819: On timeline all posts are 2h before CET

Implement dust helper userdate for utc date strings.
Merge pull request #63 from nidzix/liveblog-15

LB-867 : Header search boxes on some sources tabs goes over list
verification posts
LB-879 : Add new functionality to Live Blog posts needed for the Citizen Desk verification workflow - delete post, assign post, change status

Styles added
LB-849 : Add the option to delete/hide posts on collaborators, SMS and user comments - design

styles added
LB-894: Twitter is not working because the proxy server is down

Upldate codebird lib which allows to set own cors proxy.
Merge pull request #66 from petrjasek/lb-894-codebird-update

Lb 894 codebird update
LB-850 : Add the option to delete/hide posts on collaborators, SMS and user comments - design

Styles added
Merge CSS styles
LB-871 : Twitter posts on timeline don't have the avatar. The avatar is showen then on embed.

Fixed
Merge pull request #64 from nidzix/verificaiton-for-user-posts

CSS Styles updates
APY-37: Implement internationalization scanner for dust/html files
* added the html type
(cherry picked from commit 0ba80c00b1f5636d9bfa8e869cb7a06556a95937)
Merge pull request #68 from msat-cont/liveblog-15

APY-37: Implement internationalization scanner for dust/html files
Merge pull request #62 from petrjasek/lb-819-timeline-date

Lb 819 timeline date
LB-916 : Live Blog general redesign

styles added