Store configuration options using different solution

[tadeck]

Currently configuration options are stored using Python file with dat extension. They are evaluated using eval() function, which may not be the cleanest solution.

We need to find another option allowing us to store settings for each server, as well as default settings used when the specific option is not found for the specific server.

ConfigParser (http://docs.python.org/library/configparser.html) may be such suitable solution.