Initial multi module product
Prepare org.pcells src directory
Create pcells-gui-core module, merge with pcells-gui-dcache
Add Logable interface
Remove pcells-gui-dcache module
Organize imports
Fix build errors, get fully building pcells
Merge pcells-gui-core and org.pcells module

This was necessary to overcome circular dependencies. The other option would have been to
redesign the application so that circular dependencies do not happen.

mvn package failing because of vomsjapi-2.0.6.jar
deleting ../../../src/api/java/log4j.properties from the jar in the .m2 directory

zip -d vomsjapi-2.0.6.jar ../../../src/api/java/log4j.properties

allows to completely package pcells. The jar with dependencies in org.pcells target
directory is then executable.
Remove pcells-gui-core
Rename resources directory
Changing images path to image
Add maven-dependency-plugin
Make ClassLoader ignore org.pcells jars