Small bookbag and janibelt fix (#463)

Now you can carry seven books into it.

* Fixing janitor's belt

Now it probably has enough space

code/game/objects/items/weapons/storage/bags.dm

@@ -266,6 +266,7 @@
 	icon = 'icons/obj/library.dmi'
 	icon_state = "bookbag"
 	storage_slots = 7
+	max_storage_space = 200
 	max_w_class = 3
 	w_class = 3 
 	can_hold = list(/obj/item/weapon/book, /obj/item/weapon/spellbook) 

code/game/objects/items/weapons/storage/belt.dm

@@ -200,7 +200,8 @@
 	icon_state = "janibelt"
 	item_state = "janibelt"
 	storage_slots = 6
-	max_storage_space  = 4 // Set to this so the light replacer can fit.
+	max_w_class = 3
+	max_storage_space  = 28
 	can_hold = list(
 		/obj/item/weapon/grenade/chem_grenade/cleaner,
 		/obj/item/device/lightreplacer,