Fixes to translation.

signs_lib/init.lua

@@ -407,7 +407,7 @@ signs_lib.update_sign = function(pos, fields)
 end
 
 minetest.register_node(":default:sign_wall", {
-	description = "Sign",
+	description = S("Sign"),
 	inventory_image = "default_sign_wall.png",
 	wield_image = "default_sign_wall.png",
 	node_placement_prediction = "",

signs_lib/locale/template.txt

@@ -0,0 +1,9 @@
+#Template
+
+Reading cached character database. =
+Font seems to have changed. Rebuilding cache. =
+Could not find font line height in cached DB. Trying brute force. =
+Sign = 
+%s wrote "%s" to sign at %s = 
+Registered %s and %s = 
+signs loaded =