Now, we can finally do proper testing using Xtext parsers during Maven Junit run. fix #9

src/core/de.evoal.core.arff/pom.xml

...est/java/de/evoal/core/arff/ArffPropertiesReaderTest.java

...src/test/java/de/evoal/core/arff/utils/LanguageUtils.java

...oal.core.arff/src/test/resources/simple/specification.ddl

src/core/de.evoal.core.junit/pom.xml

...src/main/java/de/evoal/core/junit/dsl/LanguageHelper.java

...ain/java/de/evoal/core/junit/resources/ResourceUtils.java

src/core/de.evoal.core.junit/src/main/java/module-info.java

src/core/de.evoal.releng.parent/pom.xml