Fixes issue where panning occurs upon mouse scroll at max/min zoom
Enables drag-panning for editor and region chooser
Merge pull request #547 from jayant1992/master

Improved panning and zooming for editor
Added a space for coding convention
Added a line for coding convention
Removed spaces for coding convention
Added API for queue messages count
Merge branch 'master' of https://github.com/codecombat/codecombat

Conflicts:
	app/views/play/spectate_view.coffee
Merge pull request #557 from codecombat/master

Master into production