[addon] Evacuate buildings

[Tamas Fonyodi]

Like in the 10th anniversary, all buildings should have an Evacuation option.
Evacuating a building would take out all the materials from it, and the man too.
Using this, we could demolish all our buildings safely, and we wouldn't have chance to lose any soldiers/men/material.

[Spike (fvv1)]

Well, in my opinion, it's not cheap if you want to demolish your buildings ^^

[Tamas Fonyodi (almoskapitany)]

Sometimes I have to do if I do not need that certain terrain or I need the soldiers from the safe territories, or i want the materials from exhausted mines/armory etc...