The view of the 5.0 release has completely been redesigned. Everything is now responsive, inclusing the CMS. I've used Bootstrap for this. The Banshee demo website already uses this 5.0 beta release, so you can test and see what it does.
To all Banshee users, please test this beta release and let me know of any issues. Specially layout issues.
For those who can't access the CMS due to change in the way Banshee stores passwords, use the database/set_password script.