Initial support for global plan-wide altitude mode setting

LinkInterface and Vehicle uses mutexes to synchronize writing bytes to the link instead of queued signals

Rework handling of fw/vehicle type with respect to conflicts with actual vehicle types.

Add invalid vertex index warning

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

VTOL Takeoff should be considered a transition to FW

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

More warnings cleanup
Android fix
More
More
More
Fix typo
Update android compiler warnings
Fix android compiler warnings
More android compiler warnings

Turn warnings back on, silence warnings we can't fix

Fix VTOL hover determination

Fix logic of when adding Landing item is allowed

Fix unit test crash

Add support for Json file string translations

New LandingComplexItem base class for landing patterns

Major rework to support terrain profile display and terrain collision reporting

Propagate opacity and interactive properties to mission items
Set opacity to 0.5 for items that are not part of the current
edit view

Small visual tweaks and fixups for patterns

Fix terrain tolerance adjustment step

App messages now use simple modal message dialogs. Vehicle messages continue to use non-modal popup.

VTOL Landing Pattern support

New wizard done model

Drag of land/loiter maintains land distance/heading as appropriate

Out Survey polygons with KML save

Much better mission->kml conversion support