Refactored awstats module, added webalizer and basicauth module

Refactored awstats module to remove all references/functions to basic authentication. I have also created and tested a module for managing webalizer in the same fashion as awstats.

Also I know you prefer to have basic authentication as part of the apache module. In the mean time I have created a basicauth module that independently adds and deletes users in a password file with the idea that the functions in the module can eventually make their way to the apache module when you are ready to refactor it. If you do not think this module is useful, feel free to ignore it.