LB-916 : Live Blog general redesign

HTML changes to follow styles
LB-871: Twitter posts on timeline don't have the avatar

Fix dust template.
Merge pull request #315 from petrjasek/lb-871-twitter-avatars

Lb 871 twitter avatars
Update test.html
Update test.html
LB-885: Exception in js console when saving blog settings

Fix blog type loading after an config save&close.
Merge pull request #318 from petrjasek/lb-885-save-blog-config-error

Lb 885 save blog config error
Merge pull request #307 from nidzix/liveblog-15

Live Blog general redesign
LB-980: Wrong author in timeline

Removed AuthorName from timeline.

Conflicts:
	plugins/livedesk/gui-resources/templates/items/implementors/timeline.dust
Merge pull request #321 from nistormihai/liveblog-15

LB-980: Wrong author in timeline
LB-819: On timeline all posts are 2h before CET

Add userdate filter to twitter times.
LB-931: Delete the 'tweet' button above the timeline

Remove the button.
Merge branch 'lb-931-rm-twitter-button' into liveblog-15
LB-772: Collaborator posts show only after reload

Reset post list on init. It was trying to update non existing list.
LB-869 : On chained blogs beside the original user name also show his avatar
Merge remote-tracking branch 'sourcefabric/liveblog-15' into devel

Conflicts:
	plugins/livedesk/gui-resources/scripts/js/edit-live-blogs.js
	plugins/livedesk/gui-resources/templates/edit.dust
	plugins/livedesk/gui-resources/templates/items/implementors/sources/instagram.dust