GeoFenceManager: Add missing signals

Update for ArduCopter 3.5 release

Allow custom overrides of windows installer icons

Resume mission shows up at wrong times

Handle bogus lat/lon from ArduPilot

Stable fixes

iOS fixes

Hide "Save Path" as it breaks the UI in General Settings.

New polygon center calc

Hide wind rose until bugs are fixed

Delay creation of MAVLinkDecoder until it is needed

Helps battery life

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