New flag: room.canSave

This fixes the problem with saving inside Inventory room.

game/begin.coffee

@@ -39,6 +39,7 @@ room "start", salet,
 # The inventory button is a regular link to this room.
 # You may alter these as much as you like or scrap it along with the button.
 room "inventory", salet,
+  canSave: false # saving the game here is forbidden. Aautosaving too.
   enter: () ->
     $("#inventory").hide()
   exit: () ->

lib/room.coffee

@@ -23,6 +23,7 @@ class SaletRoom
     @canChoose = true
     @priority = 1
     @displayOrder = 1
+    @canSave = true
     @tags = []
     @choices = ""
     @optionText = "Choice"
@@ -99,7 +100,7 @@ class SaletRoom
       if @afterChoices?
         @afterChoices.fcall(this, system, f)
 
-      if system.autosave
+      if system.autosave and @canSave
         system.saveGame()
 
     ###