Date addon boxes are now clickable

coffee/forms.coffee

@@ -21,7 +21,9 @@ $ ->
         $(@).change()
 
     $('input[type^=date]').each ->
-        create_addon(@).html('<span class="glyphicon glyphicon-calendar"></span>')
+        create_addon(@)
+            .html('<span class="glyphicon glyphicon-calendar"></span>')
+            .on 'click', -> $(@).prev('input').focus()
 
     $('input[type=number]').on('focus', -> $(@).select())