UI: Disabled of removing items when FleetManagement is going on
ATC: Added support for removing from the context menu
SHOULD BE TESTED ON REAL ROOMBA: UI: Status info is cleared when
disconnecting
SHOULD BE TESTED ON REAL ROOMBA: QML: Added capacity reading for
battery percentage from roomba
SHOULD BE TESTED ON REAL ROOMBA: UI: Removed IP address from virtual
roombas

* Virtual Roombas are always connected also in UI
* Virtual Roombas have only "Rename" button instead of "Connect"
* Default naming of Roombas is now counting