Integrate work done by francesco for sidebars

Integrate simple blank pane for all tabs
SDUX-117
Add Info Pane details

+ add side pane directive
+ basic styles for info pane
Add provider for panes instead of factory
Add toggle directive (another sdcheck)
Fancy tabmodule open
Add panes service

create panes service for loading, changing and saving specific panes
configurations at local storage
Edit functionality for tabpane

Edit place
Edit ByLine
Remove subject
JShint fix
Add slider component to superdesk

Implement slider for choosing item urgency
Merge remote-tracking branch 'nikola/ae-panes'
Use angular version 1.2.9.