Add an option use the external URL when on mobile data

**Is your feature request related to a problem? Please describe.**

Either of the option in the internal server url settings (dropdown options) needs the location to be turned on. I'm currently using the option that needs to open location setting when outside the home network. This drains my phone battery even faster.

**Describe the solution you'd like**

Use the external URL when your mobile data connection is on. You don't have to turn on the location in order to check your wifi network.

**Describe alternatives you've considered, if any**

**Additional context**