BETA v17

- @Chatmans made two new dancefloors (small and large) for the world, which will now be the new default. They are in the same style as the new spectatorrooms.

- Reworked admin panel to be more user friendly.

- Added the option in the admin panel to switch to the old dancefloors, using the "Performance Room" toggle.

- Updated the DB, now at 2178 entries. @Felky continued on 1P Just Dance and @MidnightEclipse added videos from the FitDanceSWAG channel.

I am personally still working on the UI rework but that is not ready for publishing yet.