Major update. Details in extended description.

* Package changes for better clarity.
* Rewrote XML parsing using the XStream library.
* Topologies for pikater can now be generated from within the app using
a dedicated java class.
* One more step made towards the welcome tour wizard being complete and
ready for use.
Moved elsewhere.
Merge branch 'master' of https://github.com/SkyCrawl/NewPikater

Conflicts:
	ivy.xml
	src/org/newpikater/pikater/PikaterGateway.java