Settings/configuration of JS variables

Hi,
Is there a possibility to define JS related configuration is some file?
I mean configuration visible inside https://github.com/grafana/grafana/blob/master/public/app/core/settings.js file. I know I can override that file with my custom configuration options e.g. changing window_title_prefix to something else or define default datasources but it’s not very future proof. Is there any external JS/JSON file similar to the general options described in the docs?

all frontend options are defined in the backend server configuration file (http://docs.grafana.org/installation/configuration/)

window title prefix is not one of them

Thanks for your help. So anything that is not listed on http://docs.grafana.org/installation/configuration/ is not available for easy configuration (without changing App files)?

I found HTTP api way of changing things e.g.

curl 'http://admin:admin@localhost:3000/api/datasources' \
    -X POST -H "Content-Type: application/json" \
    --data-binary <<DATASOURCE \
      '{
        "name":"influx",
        "type":"influxdb",
        "url":"http://localhost:8086",
        "access":"proxy",
        "isDefault":true,
        "database":"inforad",
        "user":"n/a","password":"n/a"
      }'

But it doesn’t provide a window_title_prefix option (only datasources).