Updated unit tests to catch another XML serialization problem, maybe related to CTL-226
Merge pull request #14 from jdehaan/develop

Updated unit tests to catch another XML serialization problem, maybe related to CTL-226
Some refactorings to make extensions to the XmlSerializer more easy in the future
Merge branch 'develop' of https://github.com/Catel/Catel into develop
XmlSerialization fix
Improved all project and item templates