VTOL Takeof/Landing Pattern work

Remove altitude mode warning which was causing recursion into dialog display and view switch problems

Temporary use setting for using CONDITION_GATE in Patterns

Plan: Add support for takeoff item required

Persist MissisonItemStatus visibility

Warn about Above Terrain usage

Add setting to show Presets tab first

Object ownership handled by SettingsGroup base class

Expose guided altitude settings. Rearrange Fly and Plan view settings.