show stacked airspaces in topview
fixed two little bugs in nearest due to wrong #ifdef

-yellow frame after selection corrected
-removed sound for every airspace added
Revert "Manual rever of march 16th commit 981c0f4369657069922d08d4856cc03499dc06ca  by Sergio."

This reverts commit f0769c8de42e6f194b2cc32f7717689f00d65467.
Missing fix reverted from ENG_MSG
Merge branch 'new_airspace_boarder' of git://github.com/AlphaLima/LK8000 into revert
Merge branch 'nearest_fix' of git://github.com/AlphaLima/LK8000 into revert