…g location

…et/rear-mounting code

…de, remove some redundant menu code

…h turret for cost & weight purposes

…s on non-omnivehicles on wide CV GUI

Specifically, omnivehicle code didn't properly unset turret max tonnage when disabled,
and the wide CV GUI specifically resets them to 0 even for non-omnivehicles.

Also remove max tonnage stuff from sponson turrets since they're unrelated to omnivehicles.
Note: non-wide CV omnivehicle code remains incomplete.

Comment out non-functioning crit loc snapshot code

…mMain

This occurred during the `cmbTurret.setSelectedItem("Single Turret")` call
after the `Load = false`, resulting in a call to `RecalcArmorLocations`.
The fix is to remove these lines since they were redundant with the later
call to `BuildTurretSelector` which properly sets `cmbTurret`.

Omnivehicle turrets:
- Turret tonnage from items now checked against max turret tonnage
- Avoid unsetting turret tonnage for locked chassis (omni variants)
- Ensure turret tonnage is kept in sync b/w UI and model
- Copy rest of related code from wide UI to non-wide UI, including rear turret tonnage support

Also:
- Fix wide UI not resetting omni variant combobox when loading new vehicle
- Fix changing from dual turrets to single turret not removing rear turret location

Also fix base loadout not referring to itself and rename SetTurretx to SetTurretxItems for clarity

Also add rear turret armor and tonnage limit to HTML export

…onnages

Also fix lock chassis button getting out of sync with omni checkbox

… bar

To help make it fit in the info bar, turret tonnages are hidden if
corresponding turret doesn't exist, and reduce width of some boxes there

Also improve validation error behavior a bit