Reset filter box when a site is saved to remove confusion

admin/controllers/filter-box.coffee

@@ -24,6 +24,7 @@ class FilterBox extends Spine.Controller
     @siteId = ''
     @query = ''
     @setup()
+    @filter()
     @
 
   setup: ->
@@ -85,5 +86,4 @@ class FilterBox extends Spine.Controller
       siteId: @siteId
 
 
-
 module.exports = FilterBox