/etc config takes precendence over local config

Isn't it a standard linux convention to have local configs take precedence over ones in /etc ?

https://github.com/nexB/scancode.io/blob/a249402fbbdebd84e0f298d15cb4c3702bf41e63/scancodeio/settings/base.py#L33-L35 appears to do it in reverse

This could cause problems in multiple scancodeio installations on the same machine with different config requirements.