Update NanoUI to use the asset_cache system

Also move a bunch of folders around.

code/modules/admin/admin_verbs.dm

@@ -138,8 +138,7 @@ var/list/admin_verbs_debug = list(
 	/client/proc/cmd_display_del_log,
 	/client/proc/reset_latejoin_spawns,
 	/client/proc/create_outfits,
-	/client/proc/debug_huds,
-	/client/proc/reload_nanoui_resources
+	/client/proc/debug_huds
 	)
 var/list/admin_verbs_possess = list(
 	/proc/possess,
@@ -278,6 +277,7 @@ var/list/admin_verbs_hideable = list(
 		/client/proc/cmd_admin_grantfullaccess,
 		/client/proc/cmd_admin_areatest,
 		/client/proc/readmin,
+		/client/proc/reload_nanoui_resources
 		)
 	if(holder)
 		verbs.Remove(holder.rank.adds)

code/modules/admin/verbs/debug.dm

@@ -782,7 +782,12 @@ var/global/list/g_fancy_list_of_types = null
 	set name = "Reload NanoUI Resources"
 	set desc = "Force the client to redownload NanoUI Resources"
 
-	var/list/resources = SSnano.get_resources()
-
+	// Close open NanoUIs.
 	SSnano.close_user_uis(usr)
-	SSnano.send_resources(src, resources, force = 1)
+
+	// Re-load the assets.
+	var/datum/asset/assets = get_asset_datum(/datum/asset/nanoui)
+	assets.register()
+
+	// Clear the user's cache so they get resent.
+	usr.client.cache = list()

code/modules/admin/verbs/mapping.dm

@@ -161,6 +161,7 @@ var/intercom_range_display_status = 0
 	src.verbs += /client/proc/cmd_show_at_list
 	src.verbs += /client/proc/cmd_show_at_list
 	src.verbs += /client/proc/manipulate_organs
+	src.verbs += /client/proc/reload_nanoui_resources
 	//src.verbs += /client/proc/cmd_admin_rejuvenate
 
 	feedback_add_details("admin_verb","mDV") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!