Clean up references to MainRootWindow globals

Fix : COGAngle indicator was shown everytime, fix isCOGAngleOK

- NorthUp becomes NoseUp and is disable by default
- Changes on SVG to make them with the same diameter as the CompassDiag
- Change the order of the indicator layouts

- Remove HomeHeading / COG / HeadingToNext
- Add setting AdditionalIndicatorsCompass that group the previous
  settings

- Add setting for Heading to Next WP and Nort Up lock
- Add check for vehicle for every indicator to avoid showig them while
  no vehicle

Android done.

UI Tweaks for all mobile platforms.

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

Everything is now based off of default font pixel size