Fix for a caching bug

[Auto-generated text]: Update on 10/30/2020 2:58:32 AM.

Fixed the new multiple bed linking on fixtures not saving properly

Can now assign more than 1 bed to a fixture by holding shift.
Added mod setting to enable quality and art on fixtures.

Added universal support for any mods that add extra floors such as deeprim and zlevels, simply overlap pipes on different floors to connect.
Fix for the impassable chest deep water mod preventing pawns using swimming pools.

Optimizations.
Water tubs now fill in the rain.
Added forbidden comps to fixtures.
Changed a couple methods to virtual in aircon and base unit comps for modding.
Added the following terrain tags for modding. dbh_water, dbh_ocean and dbh_s_water for low quality water. These decide where and how much groundwater is generated and what surface water pawns can use.

fixed mod conflict with Altered Carbon

issue with alt carbon mod so reverted

Optimizations

Auto rebuild should now work on pipes.
Pawns should no longer try to wash with modded terrain like lava that uses the water tag.