importing all available extensions

Change-Id: Ib694d91ba3a9b6578b7e547c21d098919a393e5d
Signed-off-by: Alexander Wert <alexander.wert@sap.com>
added extension.info files to all extension projects

Change-Id: I908f1e4fc930d20d2f44ce573397cf722638538c
Signed-off-by: Alexander Wert <alexander.wert@sap.com>