UI tweaks

Limit chart to 6 series (arbitrary)
UI tweaks

WIP - MAVLink chart as a control. Add any number of charts with any number of series. All individually controlled.

Add custom chart header

Heading value should be real so NaN comes through

Only trust gcs heading from plugin

Fix MAV_CMD_IMAGE_START_CAPTURE unit test usage for take photo

Fix MAV_CMD_IMAGE_START_CAPTURE usage

Fix reference to null

Move label for better fit

Android OpenSSL support

Warning text update

Less wordy text

Add localization

Fix white on text coloring

Use Map Palette

Update vehicle heading from possible item change

Persist MissisonItemStatus visibility

MissionItemStatus: Show seq nums, clickable selection

Remove unused code

Support Keep map centered on vehicle

Allow reset all to default for any firmware

Fix showPanel calls