Preprocessor

Pull request #18: Develop

Merge in EOSC-RS/preprocessor from develop to master

* commit 'cde4349c458db96486fa5b8073f3ece121070105':
  RS-385 new Maven module "commons-testing"
  RS-385 OagResourcesPreprocSparkJob.java suppports a new JSONL data dumps format
  RS-385 fixed Dockerfile - Spatk TGZ file URL replaced with a permanent link
  RS-385 fixed TrainingsMappingTest.java and TrainingsTransformationTest.java
  RS-385 RandomUserPicker.java fixed to always have a non-empty collection of cached users
  RS-385 Jenkinsfile-onlybuild - java and maven version printing
  RS-385 Jenkinsfile-onlybuild - `maven clean install -U` instead of `maven package`
  RS-385 fix Spark IP address - test
  RS-385 fix SparkSession
  RS-400 user interests removed from US
  RS-385 renamed columns - trainings
  RS-385 adjust trainings processing
  RS-385 extended tests for OARG processing
  RS-385:  - enabled OagResourcesPreprocSparkJobTest.java which has never been launched in maven builds because of pom.xml misconfiguration  - library versions extracted to properties in parent pom.xml  - parent-relation set between modules
  RS-182 dumps-get-file.sh
  RS-182 fixed resource name param values in job-run-processing-*.sh scripts
  RS-382 CHANGELOG.md update
  RS-182 Operations.md and utility scripts added to the CHANGELOG.md
  RS-182 job-run-processing-TRAININGS.sh and job-run-processing-resources.sh do really call the REST API instead of just priting the request
  RS-182 fix in job-run-transferring-dumps.sh