Request: Allow subfolder as path/url

[Nowi5]

Hi all,
I would like to build up a virtual folder structure e.g. about_us/the_team and about_us/history to be more SEO friendly. But when I save those there get to about_usthe_team and about_ushistory. This is very ugly and should be at least replaced with a minus or underline instead.

Thank you for considering that in the next update.