Misc decal additions and merge fixes on most Z-levels.
Crescent windows were all kinds of a mess for some reason. Replaced instances with a spawner instead.
Asteroid solars were all cramped with solid walls. Gave them more space to allow for at least some power production.
Fixes warning stripe corners on all Z-levels. To correct the following search replace can be used:
/obj/effect/floor_decal/industrial/warning/corner{dir = 8} -> /obj/effect/floor_decal/industrial/warning/corner{dir = 5}
/obj/effect/floor_decal/industrial/warning/corner{dir = 1} -> /obj/effect/floor_decal/industrial/warning/corner{dir = 8}
/obj/effect/floor_decal/industrial/warning/corner{dir = 5} -> /obj/effect/floor_decal/industrial/warning/corner{dir = 1}
