Merge branch 'elasticsearch_update' into 'master'

Elasticsearch update

See merge request !413

app/services/search_service/model.rb

@@ -37,14 +37,15 @@ module SearchService
     end
 
     def mount_query
-        match_all_query = {
-          query: {
-            bool: {
-                filter: mount_filter
-            }
-          }
+      match_all_query = {
+        bool: {
+          must: {
+            match_all: {}
+          },
+          filter: mount_filter
+        }
       }
-      return match_all_query if @search.query == "*"
+      return match_all_query if @search.query == '*'
 
       {
         function_score: {