Also added new FirmwarePlugin::brandImage support

_finalize methods need information which is not available if all you
have is a mavlink_message_t

- GeoFence support comes from plugin
- Circle fence support
- Better param support

Numbering on motor command is wrong (or strange), so wrong motors spin
when using sliders

Channel 6 Min Max

Channel 6 Tuning for APM Copter in tuning section

Remove Colon in Label

In Flight Tuning label

* Add volt/amp calculators

* Correct amps per volt calculation

* Update param meta

* Implement trigger interface UI

* Deal with missing parameters on Solo

* Fix trigger set