New cargo crates to buy

Also some minor spelling fixes I noticed.

🆑 coiax
tweak: Internals Crate now contains breath masks and small tanks.
rscadd: Metal foam grenade box crate added for 1000 points
rscadd: Added two Engineering Mesons to Engineering Gear Crate
tweak: Engineering Gear now costs 1300
rscadd: Breach Shield Generator Crate added for 2500 points
rscadd: Grounding Rod Crate added for 2500 points
rscadd: PACMAN Generator Crate added for 2500
rscadd: Defibrillator Crate added for 1500
rscadd: Nanotrasen Customs report that some wide band suppliers have
been providing "alternative" firing pins. Nanotrasen reminds all
crewmembers that contraband is contraband.
/🆑

Laser tag firing pins (only allow gun to be fired with laser tag armor
of the appropriate colour) added to contraband.
Special clown firing pin (prank your friends) added to contraband.

code/modules/cargo/export_scanner.dm

@@ -11,7 +11,7 @@
 /obj/item/device/export_scanner/examine(user)
 	..()
 	if(!cargo_console)
-		user << "<span class='notice'>You had to link it to supply console for it to work.</span>"
+		user << "<span class='notice'>The [src] is currently not linked to a cargo console.</span>"
 
 /obj/item/device/export_scanner/afterattack(obj/O, mob/user, proximity)
 	if(!istype(O) || !proximity)
@@ -44,4 +44,4 @@
 				exported = TRUE
 				break
 		if(!exported)
-			user << "<span class='notice'>The object is unexportable.</span>"
+			user << "<span class='notice'>The object is unexportable.</span>"