added quick tests; updated config.ini and lib/config.py
added basedir in master section (config.ini)
username is now available in configuration
fixed interpolated values format in config.ini
added ConfigError exception; generating more values at runtime
added a new method: available_in_range (lib/ports.py)
fixed errors in config.ini; added shipit_user and role in shipit section
added logger.ini
added *.log in .gitignore
removed prints from lib/ports.py
added logger and updated _set_runtime_values (lib/config.py)
generic logger (uses logger.ini)
work in progress: added hg checkout and make steps