Merge branch 'stable-2.6' into stable-2.7

* stable-2.6:
  Fix: Duplicate options of permitted_labels.
  Make links appear with the same color in Change UI
  Update revision of reviewnotes plugin

Conflicts:
	plugins/reviewnotes

Change-Id: Ib88f7163a15a6fefd0f30f7eacef7b576aa79ab1