Allow non-root to run program

[domenkozar]

From: https://bitbucket.org/iElectric/g-pypi2/issue/2/allow-non-root-to-run-program

In my gentoo systems I often make overlay user writtable and only Manifest generating is restricted to root. Right now gpypi2 is hardcoded to uid==0. Another problem is, while stripping uid check part, config file would be created in /etc

I would suggest to: 1) Get echoing possible without root access 2) Check out access privileges rather than uid to create ebuilds 3) Provide pregenerated config with package