misc changes

makes a indestructible snow turf type for outposts

replaces the bar dispensers with non-upgraded ones

misc floor changes

replaces all rock surfaces in hangars / outpost with the unbreakable variant

_maps/outpost/hangar/nt_asteroid_20x20.dmm

@@ -1088,7 +1088,7 @@
 	},
 /area/hangar)
 "DD" = (
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "DG" = (
 /obj/structure/railing{

_maps/outpost/hangar/nt_asteroid_40x20.dmm

@@ -10,7 +10,7 @@
 	},
 /area/hangar)
 "au" = (
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "ba" = (
 /obj/effect/turf_decal/trimline/opaque/yellow/filled/arrow_cw,

_maps/outpost/hangar/nt_asteroid_40x40.dmm

@@ -741,7 +741,7 @@
 	},
 /area/hangar)
 "DK" = (
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "DS" = (
 /obj/structure/fence/door,

_maps/outpost/hangar/nt_asteroid_56x20.dmm

@@ -177,7 +177,7 @@
 /area/hangar)
 "eW" = (
 /obj/effect/decal/cleanable/dirt,
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "fb" = (
 /obj/effect/turf_decal/trimline/opaque/yellow/filled/arrow_cw{
@@ -886,7 +886,7 @@
 	},
 /area/hangar)
 "FQ" = (
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "Gc" = (
 /obj/effect/turf_decal/industrial/warning,

_maps/outpost/hangar/nt_asteroid_56x40.dmm

@@ -176,7 +176,7 @@
 /area/hangar)
 "il" = (
 /obj/effect/decal/cleanable/dirt,
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "iT" = (
 /obj/effect/turf_decal/siding/wood{
@@ -1310,7 +1310,7 @@
 /turf/open/floor/plasteel/tech,
 /area/hangar)
 "UY" = (
-/turf/closed/mineral/random/snow,
+/turf/closed/indestructible/rock/snow/schist,
 /area/hangar)
 "VD" = (
 /obj/effect/turf_decal/trimline/opaque/yellow/filled/arrow_cw{