pulled GetSubscriptionHandler out of xmlhandlers
pulled GetConfigurationsHandler class out of xmlhandlers.php and put into XmlHandler/Configuration.php
GetBlacklistHandler -> XmlHandler/Blacklist, and blank lines at end of other new XmlHandler classes
GetCategoriesHandler -> XmlHandler/Category, and some class doc blocks
finished moving classes out of xmlhandlers.php, and removed xmlhandlers.php from project