Added traffic and chassis as uncountable words to properly feed pluralizer

Signed-off-by: Jason Walton <jwalton512@gmail.com>

application/config/strings.php

@@ -96,6 +96,8 @@ return array(
 		'sheep',
 		'species',
 		'moose',
+		'chassis',
+		'traffic',
 	),
 
 	/*
@@ -185,4 +187,4 @@ return array(
 
 	),
 
-);
+);