gwt-http
Rewrite SafeHtmlTemplatesGenerator without dependency on I18N.

Also simplifies AbstractGeneratorClassCreator a bit.

git fetch https://gwt.googlesource.com/gwt refs/changes/20/1320/3 && git cherry-pick FETCH_HEAD

Change-Id: Ie23cea62db7e73c163cfb8194452d8f010f084de
Split gwt-core into shared and client, merge gwt-lang in gwt-core-client
gwt-regexp-*, gwt-safehtml-server, gwt-i18n-{shared,server}, gwt-core-server
gwt-rpc
Add AsyncProxy and Cookies to gwt-core-client
gwt-safehtml-client & gwt-dom (with Window and Timer)
gwt-safecss
Fix gwt-core
Fix gwt-compiler
bindery/event, bindery/event-gwt
gwt-event-{shared,client}, gwt-event-logical-{shared,client}
update plugins
WIP: gwt-resources
Move Window and Timer into their own artifacts

Window depends on Resources.
gwt-jsonp
Extract gwt-resources-core from gwt-resources
gwt-junit (finally!)
gwt-i18n-client