Fix mode switching

PX4 Firmware plugin: First try to switch flight mode, then arm if successful - which is a lot safer than arming and then seeing if we can switch modes.

Firmwareplugin: Trim retry period to something that matches closer the users attention and is still long enough to allow for multiple heartbeats to pass through

Survey fixes

Support for camera min trigger interval validation

Go to location fixes

- Don't allow goto click while other guided ui is visible
- Use NoMouseThroughRectangle for guided ui popups
- Better visuals for goto indicator in map

Survey: Bounding extension was too short

Survey: Option to take images in turnarounds

Caused intersection failure in some cases

Update PX4 meta data

Fly view fixes

Work around FlightMap weirdness

Set default video streaming to Disabled.

Deal with macdeployqt relocation issues

Put back correct app name

Survey: Overlap should not be negative

Mobile telemetry logging

Camera: Added Sony RX100

Fix bad signalling when fence/rally not supported

ExternalLibs: Fix compilation on windows 64bit

Support for custom build installers for Windows/OSX