Fixed endless loop for mod checker

Modding: global alert available as triggerable for all objects

Better order of unit actions

Better checks for when units are purchasable

Fixed flanking bonus calculation when attacking unit is not adjacent to enemy

Automated workers do not remove Forest tiles for Camp improvements

Fix ExploredRegion rectangular maps support + Zoomout flicker prevention reworked  - By Gualdimar

Make "Borderless" display option translatable  - By Ouaz