Update to derby/racer master

Ref #475

Backbone: Use underscore instead of lodash

lodash doesn't support _#chain which backbone.localStorage requires.

#475

#475

#475

#475

#475

#475

#475

Unquoting attributes causes issues with the closure compiler.

Added filtering to GWT implementation

Fixed whitespace issues

Added routing
Fixed bug, CSS class 'done' applied to cells should have been 'completed'