Remove airplane icon when totally disconnected device is not in airplane mode

Linaro Bug #873281
Snowball: Airplane mode enabling/disabling does not work as expected
https://bugs.launchpad.net/bugs/873281

Change-Id: Ide752f4cc31dfbadde8f11bd1fd9fc408d25c716
Signed-off-by: Veli-Matti Anttila <Veli-Matti.Anttila@elektrobit.com>
Call to equals() comparing different types

I have found this bug with the FindBugs tool

Change-Id: I99c5baf1565e51fd895778bd06757d42e959ba5d
Signed-off-by: László Dávid <laszlo.david@gmail.com>