This Extension is based on the extension dock@isopenisfree.wordpress.com
All credits to IsOpenIsFree (version for Gnome 3.4) and LinuxDeepin (version for Gnome 3.2)

url: https://launchpad.net/~yunnxx/+archive/gnome3/+build/3583440/+files/gnome-shell-extensions-dock-preview_3.4.004isopenisfreeprecise-1ubuntu1_all.deb

and

https://extensions.gnome.org/extension/265/deepin-enhanced-dock/

Changes: 
* Favorites do not appear. The dock shows only the running apps. (see extensions.js)
* since all apps are running apps, the css- class ".dock-app.running" isn't needed anymore (see stylesheet.css)
