Debian install with pip packages or debian packages

* detection of pymysql and python-magic and install pip version if it is not present.
* detection of pymysql package version to build database url.
* adding a --dist-packages that will install distribution needed package with distribution specific tools
    - only works on Debian with apt-get tool, for moment)
    - create database 'domogik' with password 'domopass'
    - todo use install database user and password given during install
* todo on debian 'domogik' user 'home' folder is not created automaticaly.