Added henchman rental

Many areas, items, and creatures were adjusted for balance and aesthetics.

_module/are/westmountaincave.are.json

@@ -87,7 +87,7 @@
   "Name": {
     "type": "cexolocstring",
     "value": {
-      "0": "West Mountain Cave's"
+      "0": "West Mountain Caves"
     }
   },
   "NoRest": {
@@ -124,7 +124,7 @@
   },
   "SkyBox": {
     "type": "byte",
-    "value": 0
+    "value": 34
   },
   "SunAmbientColor": {
     "type": "dword",
@@ -6740,7 +6740,7 @@
   },
   "Version": {
     "type": "dword",
-    "value": 11
+    "value": 12
   },
   "Width": {
     "type": "int",