Setting a base url with: `SITE_PREFIX_URL`

[DaveGhedini]

Checklist

• [x] I've searched through the current issues to make sure this feature hasn't been requested already.

Motivation

Motivation I would like to run g3w-suite in a specific url location (e.g. /g3w). I run g3w behind an Apache proxy and updating below <Location "/"> Require all granted ProxyPass unix:/opt/g3wsuite/g3w-admin.sock|uwsgi://uwsgi-g3w-admin/ </Location>

to:

<Location "/g3w"> Require all granted ProxyPass unix:/opt/g3wsuite/g3w-admin.sock|uwsgi://uwsgi-g3w-admin/ </Location>

This works for most items, but not for maps, which cannot be loaded.

It would be very good to have BASE_URL or BASE_PROXY_URL setting that can be configured.

Suggested solution

Add BASE_URL or BASE_PROXY_URL setting.

Alternatives considered

No response