Started reviving the XML library format

Changed Server Libraries to say XML Library.  Started implementing and
fixing methods in XmlItemLibrary
Started implementing a rest API
Fixed bug with saving orders using XML libraries
Started implementing Sessions

Started implementing a login mechanism by creating a session object for
an address after logging in using a hash containing the appropriate
token
Added login abilities for REST webservice requests
Fixed bugs in login mechanism and added messages

Added different messages for different mistakes, such as failing to log
in, when a log in is failed or successful, trying to get a token without
a username, and getting a token with an invalid username.
Added logout functionality
Started implementing an ItemHandler. Made json text print in a more
readeable way in the response. Added better error handling so that onGet
and onPost methods in ServerHandler objects can throw exceptions other
that IOExceptions
Added REST capabilities to view all orders, view all items, and view all
items in a given order
Made it easier to set the Application libraries by putting a couple
static methods in Application to set them
Added python scripts for faster testing

Added scripts to log in and log out of the REST services
Merge remote-tracking branch 'origin/master' into 0.1