Fixes plastic flaps
Created by: clusterfack
Fixes #5031 (closed)
-Regular plastic flaps were not originally meant to be airtight, they can now be made airtight with a crowbar and anchored/unanchored with a wrench. -They now use canpass instead of EDITING THE TURF AIR BELOW IT to set airtight qualities. -They now have examine text and a different name/desc to show if they are anchored/airtight or not -Wrench anchors/unanchors as it does with most equipment