Currently static CSS files work fine in apps outside of the root.
However, as soon as an app uses SCSS, Nextcloud starts being unable to
find the web root.
Fix this problem by backporting select snippets from master
specifically targeting this issue, and add a test to ensure it doesn't
regress.
Fix#5289
Signed-off-by: Kyle Fazzari <kyrofa@ubuntu.com>
Currently, if the app path includes a symlink, the calculated webDir
will be incorrect when generating CSS and URLs will be pointing to the
wrong place, breaking CSS.
Use realpath when retrieving app path, and these issues go away.
Fix#6028
Signed-off-by: Kyle Fazzari <kyrofa@ubuntu.com>