* added simple validation class (based upon htmlunit / junit)
* created test.gradle build for - which works
* integration of test.gradle into build.gradle does currently not work
* some more testcases
* migrated to java
a nice smoketest, validating some headings, formal stuff plus image files.
nothing serious :-)
Merge commit 'fd4a28722c8694bfcf77e8b4d5567d98ec0bc903' into htmlunit-validation

* commit 'fd4a28722c8694bfcf77e8b4d5567d98ec0bc903':
  Please check: Added goal to analysis phase - missed quality requirements as major objecitve.
  Added some more details to Root-Cause-Analysis.
  Typo.
  Sonar is LGPL licensed not GPL licensed.