Moved CHANGELOG entry up to help avoid future conflicts

rebased with latest changes from master

CHANGELOG

@@ -18,6 +18,7 @@ v 8.10.0 (unreleased)
   - Check for conflicts with existing Project's wiki path when creating a new project.
   - Remove unused front-end variable -> default_issues_tracker
   - Add API endpoint for a group issues !4520 (mahcsig)
+  - Add Bugzilla integration !4930 (iamtjg)
   - Allow [ci skip] to be in any case and allow [skip ci]. !4785 (simon_w)
   - Add basic system information like memory and disk usage to the admin panel
 
@@ -26,7 +27,6 @@ v 8.9.3 (unreleased)
   - Fix encrypted data backwards compatibility after upgrading attr_encrypted gem
   - Update mobile button icons to be more inline with typical UI paradigms
   - Fixes missing avatar on system notes. !4954
-  - Add Bugzilla integration !4930 (iamtjg)
 
 v 8.9.2
   - Fix visibility of snippets when searching.