Also understand the concept of missions which cannot be edited

Paramedter Editor search support

Added APM Firmware Plugin

- Also added new adjustMavlinkMessage support

Too complicated supporting both modes as editor becomes more complex

Joystick fix

travis-ci s3 deploy

Allow buttons to be scrolled

Remove HDD, HUD, HSI

travis-ci android

Add relative altitude support

Remove nigh load/save

Also much other cleanup/change

Font size based sizing and relative positioning fixes

Revert "Update NSIS script to include ANGLE dlls for windows, add NSI…

Add --test-high-dpi command line option

This allows for testing issues found on high dpi screen without needing
a high dpi screen. it does this by doubling the font sizes.

Add Delete, Move Up, Move Down

These use OpenGL implementation which prevented moving to ANGLE
support. Since they are rarely used they are being remove instead of
being upgrade.

These use OpenGL implementation which prevented moving to ANGLE
support. Since they are rarely used they are being remove instead of
being upgrade.

Plus more overall ui work

Stop using fixed pixel count spacing

More MissionEditor work