Added log4j support for unit tests (i.e. added a log4j config file to src/test/resources)
Removed unused MFL test CSV
Improved loading of metadata packages
* Listing of packages moved into XML file (packages.xml)
* All metadata files moved into a subfolder in resources
* Unit test for metadata package loading working with its own test package
Updated HFE version 2.0.3 -> 2.0.4