Enable setting for skip metadata retrieval on database scanning.

Enabled settings for enabling/disabling USB/WiFi monitoring.
Make sure to init properly in the db multimedia files copied to the PC.
Translate system Qt widgets.

src/cmaclient.cpp

@@ -75,6 +75,7 @@ void CmaClient::connectUsb()
         }
     } while(isActive());
 
+    usbwait.unlock();
     qDebug("Finishing usb_thread");
     emit finished();
 }