Completes Sub Categories and Measures for "All " Category Tabs -

Milford High School (Milford District).  Add tabs to top navigation [#179727241]

app/models/sqm_category.rb

@@ -1,3 +1,7 @@
 class SqmCategory < ActiveRecord::Base
+  include FriendlyId
+
+  friendly_id :name, use: [:slugged]
+
   has_many :subcategories
 end