Add database reset warning

[maximilianoertel]

At the moment, as an admin, within the settings page you can click on "Reset Database". This immediately resets the database and shows a confirmation modal afterwards. For the WiFi settings page we used an additional warning modal in order to prevent accidental resets. We should implement this additional warning modal to prevent accidental database resets.

• [ ] Add "warning" modal when clicking on "reset database"
• [ ] Trigger reset only if user confirms in modal, otherwise abort

[maximilianoertel]

@maggie0002 agree on the above?

[maggie44]

Yep