Prepare for new search logic with feature toggle

modules/restserver/src/main/resources/reference.conf

@@ -70,6 +70,8 @@ docspell.server {
   # In order to keep this low, a limit can be defined here.
   max-note-length = 180
 
+  feature-search-2 = true
+
 
   # This defines whether the classification form in the collective
   # settings is displayed or not. If all joex instances have document