Features/GTK3/Shell/GTK3 Port

Manuq started the port of the shell branching the hippo removal. The main issues were identified by Daniel Drake some months ago and fortunately most of them are fixed at this point.

Daniel Narvaez set up a sugar-build branch to make the port. To test:

git clone git://git.sugarlabs.org/~dnarvaez/sugar-build/manuqs-shell-port.git

That is sugar-build with this sugar components branched:

http://git.sugarlabs.org/~manuq/sugar/manuqs-erikos-shell-port http://git.sugarlabs.org/~manuq/sugar-toolkit-gtk3/manuqs-sugar-toolkit-gtk3