make Candidates and Connections collections, rather than models
pass model objects to collection methods, instead of DOM elements
replace 'create:from_new_item' event with jqXHR.done() invocation
keep candidate DOM logic in CandidatesView
remove merging of nonexistent @attributes
handle case where ajax response is a string
convert Candidates back into a model
Merge pull request #342 from scribu/backbone-refine

Backbone refinements