The current monitor used was the 'default' one, the primary monitor
but if your default monitor was the laptop one, with the lid closed
like mine was for quite a bit, you'd spend like 20 minutes trying to
find the preferences dialog, like I did.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

The QString behaves faster if used with const - reference on
a QForeach.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

if an unknown string was passed to createInnerDockidget,
the widget would not be created but a reference to the null
pointer would still be saved on the avaliable dock widgets,
and thus any code that foreached the list accessing methods
could led to a crash.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

Since it's just a state-toogler, use the return value of the
method to set the values directly.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

They were causing variable scoping conflicts. This in turn caused the
widget to not update. Active property is not needed since the handling
of active/inactive vehicle is handled outside of the control

Allows for signal count > 1

Also merged MissionController and MissionEditorController into single
MissionController implementation