LB-916 : Live Blog general redesign

styles added
LB-965: Admin UI -> Timeline -> 'Invalid date' warning is displayed for published posts

Parse superdesk date format via regexp.
Merge pull request #70 from nidzix/liveblog-15

Live Blog general redesign
Merge pull request #72 from petrjasek/lb-965-date-invalid-format

Lb 965 date invalid format
LB-819: On timeline all posts are 2h before CET

Try to parse the string via js date if there is no match with superdesk
date format.
Merge pull request #74 from petrjasek/lb-819-parse-twitter-date-format

Lb 819 parse twitter date format
LB-948 : The user comment don't recognize any captcha response
Merge remote-tracking branch 'sourcefabric/liveblog-15' into devel

Conflicts:
	plugins/gui-core/gui-resources/styles/less/buttons.less
	plugins/gui-core/gui-resources/styles/less/superdesk-base-template.less