Fix String>>, bug in Chrome dev
Modified Bug fix to preserve speed
Use a newer version of jQuery.
Fixes a deprecated message send in `Announcer`
Renames package 'Importer-Exporter' into 'Kernel-ImportExport'
use bower for jquery-ui too
amber/lang, pre-fetch of smalltalk.js

another set amber/lang introduced, with compiler, import/export
and sunit. This allows to load the whole language
without any IDE (for remote use etc.).

Also, smalltalk.js (and deploy.js in some cases) is
mentioned in dependencies redundantly, to load them sooner,
thus loading boot.js sooner and start loading their dependencies
sooner (not to have too deep dependency tree, thus having less
start-loading-another-set-of-dependencies phases).
use minified jquery-ui
Do not use getter ES5 syntax for old browsers.

IE8 seems to have problems with this,
so using ES5-shim's Object.defineProperty instead.
Adds back Package >> commit