Experimental 0.1.12091

Fixes:
- Fix for units falling off power grid randomly
- Fixed power system data overflow
- Added num_operating_entities for calculating player tech level
- Text fix for photon cannon damage
- Fix range visualization effect not moving with entity when spawned while not in camera view
- Mission tweak, spawn Anomoly particles while mining blight crystal and not when blight crystal resource has been depleted
- Various Lua error fixes

Additions:
- New Behaviour Commands: Is_Fixed, Is_Equipped
- Behaviour "Place Construction" - now supports rotation and optional building size
- Tech Research Register Selection