All mixed up

For some reason I got mixed up and changes reverted, so this commit has some of yesterday's general UI fixes ...

as well as questions on why adding the "create set" modal is so darn difficult. Also, my sets view has disappeared from #sets href
Merge branch 'master' into create-set-modal

Conflicts:
	modules/UshahidiUI/media/css/global.css
Remove sass-cache again
Fix create set modal

Fix the JS error in SetsView: events shouldn't be inside 'initialize',
and you need to add the showCreateSet handler function
Rename the event to 'set:create'
Merge pull request #105 from ushahidi/create-set-modal
Upgrade backbone to fix issues with models getting the wrong URL

This bug https://github.com/jashkenas/backbone/issues/2416 means that
models
fetch by a collection get their url set to the collection url, not
individual model urls.
Upgrading backbone to latest master to fix, waiting for next BB release.
Merge branch 'master' of github.com:ushahidi/Lamu into media-model-api
Fix a minor typo
Add size hight to configuration file
Add file max size to configuration file
Fix the type value for max file upload size
Restore config details for front-end media
Log all e_warnings when deleting an image file
Add imagefly module
Enable imagefly module
Swtich to using imagefly for dynamic resizing.
Remove manual way of resizing images
Save mime to the database
Remove validation for thumbnail and medium size images