Unable to build CostFed from Maven

Some problems prevent CostFed to be build. It is somewhat difficult to offer suggestions since it is not clear to me what your plans for a build setup are.

Here are some issues I am having at the moment

- In root pom.xml you refer to `costfed-web` where the folder currently is named 'co**n**stfed-web'
- In pom of fedx artifacts for commons lang3 (org.apache.commons:commons-lang3) and rdf4j.sail.nativerdf (org.eclipse.rdf4j:rdf4j.sail.nativerdf) are not configured. Possibly some other artifacts are missing too.
- Encoding is not set in Maven which makes the build platform dependent: different interpretation of your source code for Windows and Linux!

Start with the root pom.xml and compare its costfed-web module reference with the actual constfed-web directory. Then inspect the poms of the fedx artifacts for the missing commons-lang3 and rdf4j.sail.nativerdf dependencies, and review Maven's encoding configuration. Run the Maven build on a clean checkout; done means the project builds consistently across Windows and Linux.

Written by the indexing model from the issue text.