excavation gear belts can now hold pick sets, pick sets can no longer hold hand picks (they spawn in the locker instead), picks and measuring tapes now work much faster

Signed-off-by: Cael Aislinn <cael_aislinn@yahoo.com.au>

code/modules/mining/mine_turfs.dm

@@ -311,7 +311,7 @@ commented out in r5061, I left it because of the shroom thingies
 	if (istype(W, /obj/item/device/measuring_tape))
 		var/obj/item/device/measuring_tape/P = W
 		user.visible_message("\blue[user] extends [P] towards [src].","\blue You extend [P] towards [src].")
-		if(do_after(user,40))
+		if(do_after(user,25))
 			user << "\blue \icon[P] [src] has been excavated to a depth of [2*src.excavation_level]cm."
 		return