Merge remote-tracking branch 'upstream/pull/4632'

diff --combined app/controllers/changesets_controller.rb
index 812db6016347de3ae472e11e7e0173d615e116ce,50eb01800f54a01c04d24b04b28fbb0785b8341d..3ea5fb64e96288551aac8169b5dfaaecc5630087
--- 1/app/controllers/changesets_controller.rb
--- 2/app/controllers/changesets_controller.rb
+++ b/app/controllers/changesets_controller.rb
@@@ -4,6 -4,7 +4,6 @@@ class ChangesetsController < Applicatio
    include UserMethods
  
    layout "site"
 -  require "xml/libxml"
  
    before_action :authorize_web
    before_action :set_locale
@@@ -15,9 -16,6 +15,6 @@@
  
    around_action :web_timeout
  
-   # Helper methods for checking consistency
-   include ConsistencyValidations
- 
    ##
    # list non-empty changesets in reverse chronological order
    def index