FEATURE: always show highest trust level badge in card

FEATURE: fa-user icon for trust level badges

app/models/badge.rb

@@ -252,6 +252,10 @@ SQL
     !self.multiple_grant?
   end
 
+  def default_icon=(val)
+    self.icon ||= val
+  end
+
   def default_name=(val)
     self.name ||= val
   end