In case the "depth" of the initial opened app page was greater than 2 it was possible to get stuck in a loop of using the back button twice from the initial page to the previous page and back to the initial page...
Instead, in case a page with a greater depth than 0 is opened, the library should just be opened when using the back button.
This way the back button actually behaves like it's intended, as an app back button and not like the browsers back button
* Require "Theme" to be passed to "SxProps"
Decreases typescript performance otherwise
* Disallow "top" and "third-level" MUI imports
* Exclude "node_modules" in tsconfig
* Optionally prevent deletion and mutation of "MutableListSetting" items
* Save server metadata per device
This makes it possible to e.g. have different settings on a desktop and a smartphone.
