Update schema

config/schemas/mod.json

@@ -65,7 +65,7 @@
 		},
 		"modType" : {
 			"type" : "string",
-			"enum" : [ "Translation", "Town", "Test", "Templates", "Spells", "Music", "Maps", "Sounds", "Skills", "Other", "Objects", "Mechanics", "Interface", "Heroes", "Graphical", "Expansion", "Creatures", "Compatibility", "Artifacts", "AI" ],
+			"enum" : [ "Translation", "Town", "Test", "Templates", "Spells", "Music", "Maps", "Sounds", "Skills", "Other", "Objects", "Mechanics", "Interface", "Heroes", "Graphical", "Expansion", "Creatures", "Compatibility", "Campaigns", "Artifacts", "AI" ],
 			"description" : "Type of mod, e.g. Town, Artifacts, Graphical."
 		},
 		"author" : {