[CB-4419] Remove non-CLI bootstrap files from cordova-js.
[all] Move some start-up logic from cordova.js -> bootstrap.js
[CB-4428] Delete Android storage plugin from cordova-js

It will be moved into cordova-labs
[win8] Move commandProxy.js into windows8/

Doesn't look to be used by any other platform.
[all] Make pluginloader call a callback instead of firing a channel.
[CB-4418] Remove final symbols.js file by folding it into bootstrap.
[CB-4418] Delete loadMatchingModules() and move modulemapping call into bootstrap.js (from platform.js)
Move bootstrap.js logic into a proper module "init.js"
[android] Move code from bootstrap-android.js into android/platform.js
[bb10] Move code from bootstrap-blackberry10.js into blackberry10/platform.js
[ios] Move code from bootstrap-ios.js into ios/platform.js
[test] Move code from bootstrap-test.js into test/platform.js
[win8] Move code from bootstrap-windows8.js into windows8/platform.js
[windowsphone] Use platform.bootstrap instead of platform.initialize for start-up logic.