filetree plugin ignores multiple filemounts

[jonakieling]

Hi there,

the UserFileMountService adds only the first file mount of the selected storage.

To be more specific, the method getRootLevelFolder() of the ResourceStorage only fetches the first file mount if it is called with the default argument to respect file mounts. Although this is documented behavior we want all the file mounts.

I'll provide a PR for this in a bit.

kind regards,
jona