[fix] added username and password in url for remote http

[imantoniojuan]

Currently, I am unable to reach my own web server with auth. I checked the code and found that the user and password were not being included in the curl path. I have added a check if those variables are not null and will be appended to the curl path.

[imantoniojuan]

Realised that on top of this, network via http also does not work. I tried bypassing my domain and connect via local network, it still fails show the file listing and only show local files. Enabling DB causes the app to crash when connecting. (v0.9.0)