refactor(search): search box clears on page change

Author: cmcnamara87

app/scripts/services/sitesearchservice.js

@@ -8,21 +8,24 @@
  * Factory in the orphaApp.
  */
 angular.module('orphaApp')
-    .factory('siteSearchService', function(searchService, $state, $log) {
+    .factory('siteSearchService', function(searchService, $state, $log, $rootScope) {
         var service = {
             query: '',
             getResults: getResults,
             changed: changed
         };        
+        $rootScope.$on('$stateChangeSuccess', 
+            function(event, toState, toParams, fromState, fromParams) { 
+                service.query = '';
+            }
+        );
         return service;
 
-
         function getResults(query) {
             return searchService.search(query);
         }
 
         function changed($item, $model, $label) {
-            $log.debug('got changed!', $item, $model, $label);
             var params = {};
             var type = $item.type.toLowerCase();
             if (type === 'clinical sign') {