Add tracking from SWGCraft

[lewismorgan]

Implementation of a tracker that can be used for obtaining data from SWG Craft.

http://swgcraft.co.uk/dev/data_export.php

Listing of servers is available. A UNIX timestamp is used for the time of generation of files which can be used to determine if tracker needs to be updated.

Resources

SWG Craft exports a list of the current resources in an xml or csv format and includes all the server resources in a singular XML. Individual server current resource files are also available.

Tree

There is a resource tree available that is used across the website for display of all resources. The file is exported as an XML in a tree based format depending on the resource.

[lewismorgan]

Moved to 2.1, because of overhead required for #16 and #17