Begun improving activating Responsive Layout

Tidied up Responsive Layout by adding new Responsive controls
Moved flatstrap js files to bottom activating those required for
Responsiveness
Added Group modal functionality

tidied up zone events
Shows correct Now Playing info, and Grouping info. Minor bug fixes.

Fixed bug with Group buttons requiring two clicks (overlapping zone
selection span)
Fixed bug with ng-scr for img tags using Angular
Extended selectedZone to show actual Now Playing info and image
Bug fix poll event updateZones resetting currentZone
Merge pull request #8 from jhelmink/master

Made page Responsive as per goals for mobile, got Now Playing and Grouping displaying correctly