Support for subdir / path

[d3xt3r01]

I have NC installed in /nextcloud/ .
I just installed it and it seems that when I try to load a .docx file the browser does a request which results in 404 (of course)

https://site/custom_apps/richdocumentscode/proxy.php?req=/browser/77a0aab/cool.html?WOPISrc=...

This should be

https://site/nextcloud/custom_apps/...

Manually loading that url seems to result in other 404s because the css and js it's trying to load also don't know about the custom path.

https://site/custom_apps/richdocumentscode/proxy.php?req=/browser/77a0aab/....
bundle.css branding.css global.js branding.js bundle.js