Make Items with mods equippable (#11)

Changes:
 + Items that can influence you stats are equippable
 + only equipped items influence your stats
 + Armor now influences your stats
 + move mods into a partial for easier changes

packs/items/blaupause-gegenstaende/rüstung.json

@@ -13,8 +13,7 @@
 			"resistanceBody": 0,
 			"spellBonus": 0
 		},
-		"equippable": false,
-		"equipped": true,
+		"equipped": false,
 		"attributeMod": {
 			"st": 0,
 			"gs": 0,
@@ -43,4 +42,4 @@
 		"XD0IpWT6bN4AJiYQ": 3
 	},
 	"_id": "pV1hNavlQGJ9UaEf"
-}
+}