Beakers and other glass containers now hide their contents, only showing the amount.

Additionally, they can be labeled with a pen, up to a max of 10 characters.

Signed-off-by: Mloc-Argent <colmohici@gmail.com>

code/modules/paperwork/handlabeler.dm

@@ -28,6 +28,9 @@
 	if(issilicon(A))
 		user << "<span class='notice'>You can't label cyborgs.</span>"
 		return
+	if(istype(A, /obj/item/weapon/reagent_containers/glass))
+		user << "<span class='notice'>The label can't stick to the [A.name].  (Try using a pen)</span>"
+		return
 
 	user.visible_message("<span class='notice'>[user] labels [A] as [label].</span>", \
 						 "<span class='notice'>You label [A] as [label].</span>")