Application with status menu

Status menu identifer is "Y" (waiting for icon)
Provides the 6 items we decided in the mandate (they do nothing execept
"Quit")
Sandboxing enabled

Sandboxing is now enabled. Please create or download a development
cetificate at developer.apple.com/certificates/ and edit the Code
Signing Identity in the project Build Settings.
Adding Icon for status bar

Added a temporary icon for the status menu bar. The official one will
be added later on.