- Updated the Unit Card for the Ambulance Wagon

Credit: r1kko

- Added the Ambulance Wagon to the roster
- Limited to 3 units
- They are better in every aspect, compared to the combat medics. Faster, stronger, way more resistant and better healing
- To make them even more special, I've nerfed the Combat Medics stats slightly and reduced their healing rate. Only the Wagon can now resurrect units

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Changed some minor settings regarding UI, descriptions, etc.

Changed the Medical Supplies Skill

Buffs:
- Healing rate increased
- Healing tick rate decreased (faster)

Nerfs:
In return for the better healing, I've also increased the risk and penalties
- slighty higher armor loss
- slightly higher melee defense loss
- Added a -100% missile block chance

Extras/Neutral:
- Skill cannot be used, when the battle outcome is decided (to avoid endless resurrection for all units after the battle is over)
- Edited the tooltip so it provides more information, especially that the skill resurrects fallen entities

- Unit Card was updated (Credits: r1kko)