Icon changes (#1400)

changes:

imageadd: "Telecomms machines now have open-panel sprites."
imageadd: "Added a new particle accelerator sprite."
Additional changes:

NTNet relay now has its own sprite.
NTNet relay now indicates its status on its sprite.
Fixes the Select-Equipment admin verb's ERT loadouts not being listed.

code/modules/admin/verbs/debug.dm

@@ -408,7 +408,11 @@
 		"emergency response team",
 		"nanotrasen representative",
 		"nanotrasen officer",
-		"nanotrasen captain"
+		"nanotrasen captain",
+		"protection detail",
+		"leading trooper",
+		"ert commander",
+		"odin security"
 		)
 	var/dresscode = input("Select dress for [M]", "Robust quick dress shop") as null|anything in dresspacks
 	if (isnull(dresscode))