This time to handle correctly updating plan/fly view when plan changes

Update the user model to a single controller instead of multiple

Fixed a pile of bugs as well

Also work on plan toolbar readability

- Look backwards from insert point
- Only pull altitude from _WAYPOINT items
- Only set altitude on _WAYPOINT items

Also added ui support for multiple complex item types

- Shot Interval in Survey
- Much change to time/distance calc

Includes ability to load params

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