Image blocking

use account service/controller in favor of SRP

add jasmine/karma for js unit testing

Better dev setup

use backbone collections/models for account data

Now it installs nodejs-legacy correctly.

use backbone/marionette triggers for UI events

fix autocomplete

settings accounts view marionette

make 'mail' a marionette application

make 'mail' a marionette application

refactor cache.js

refactor communication.js to match revlealing module pattern

refactor search.js to match revlealing module pattern

refactor ui.js to match revealing module pattern

Refactor background

Force jscs