avoid hiding "Show Relnotes" button when new Wizard window is created (bnc#876668)
Merge pull request #35 from jsrain/logo_header

Avoid hiding "Show Relnotes" button when new Wizard window is created (bnc#876668)
This changes the semantics of YQWizard::showReleaseNotesButton from "do it for this instance, of course" to "do it for this instance and any new instance too".