Change array_replace function back to its original, properly functioning configuration.
Fix spacing.
Merge branch 'hotfix/breadcrumbs-homelink' into stage

* hotfix/breadcrumbs-homelink:
  Fix spacing.
  Change array_replace function back to its original, properly functioning configuration.
Merge branch 'stage' of git://github.com/vanilla/vanilla into stage

* 'stage' of git://github.com/vanilla/vanilla:
  Fix merge error in 2a58389ad1073555781deb672fbc0c5d997931f2
  Profiles: Fix unread discussions to reflect viewer, closes #1846