And some cleanup.

* Now we have to use the main switch button to start a pairing.
* If device is unpaired from mobile device, switch button now turn off.
* If device was unpaired when EOSConnect was not active, switch button 
is off.

* now can send one or multiple files with context menu from Files.
* if device is not connected, it does not appears anymore in dock's 
quicklist neither in File's context menu.

* delete cotnract files when application close.

Fix: click on "send or view SMS" in quick list now display correctly the SMS tab.