don't rotate the radar dish when it is powered down

closes #3755
allow animations to pause on low power

closes #2949
stop spinning the radar dishes in Tiberian Sun on low power
Merge pull request #5138 from Mailaender/disable-idle-overlay

Fixed the Dune 2000 outpost radar dish rotating when powered down
StyleCop
only show welding overlays when factories are producing

closes #3756
added production overlay to Tiberian Sun factories