Move CHANGELOG entry.

CHANGELOG

@@ -6,6 +6,8 @@ v 7.9.0 (unreleased)
   - Improve error messages for file edit failures
   - Improve UI for commits, issues and merge request lists
   - Fix commit comments on first line of diff not rendering in Merge Request Discussion view.
+  - Add Bitbucket omniauth provider.
+  - Add Bitbucket importer.
 
 v 7.8.0
   - Fix access control and protection against XSS for note attachments and other uploads.
@@ -72,8 +74,6 @@ v 7.8.0
   - Improve database performance for GitLab
   - Add Asana service (Jeremy Benoist)
   - Improve project web hooks with extra data
-  - Add Bitbucket omniauth provider.
-  - Add Bitbucket importer.
 
 v 7.7.2
   - Update GitLab Shell to version 2.4.2 that fixes a bug when developers can push to protected branch