Fix String>>, bug in Chrome dev
Modified Bug fix to preserve speed
Merge pull request #747 from massimomilan/string-comma-chrome-dev-bug

Fix String>>, bug in Chrome dev
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.
Merge pull request #750 from herby/getter-syntax-old-browsers

Do not use getter ES5 syntax for old browsers.
Merge pull request #749 from herby/use-minified-jqueryui

use minified jquery-ui
Adds back Package >> commit
Merge pull request #748 from herby/amber-lang-set

amber/lang, pre-fetch of smalltalk.js
remove forgotten `BrowserInterface class` variables
Merge pull request #751 from herby/cleaning

remove forgotten `BrowserInterface class` variables
fixed deps in amber.js
Merge pull request #753 from herby/fixed-deps

fixed deps in amber.js
include new brikz with ie8 fix
use (non-writable if supported) property, not getter

Getter was too smart :-/ for IE8.