SSDM-2366: processing services implemented and test in Java and JS.

...dss/generic/server/plugins/demo/DemoProcessingPlugin.java

...generic/dss/systemtest/api/v3/AggregationServiceTest.java

.../generic/dss/systemtest/api/v3/ProcessingServiceTest.java

...s/generic/dss/systemtest/api/v3/ReportingServiceTest.java

...ests/1/as/webapps/openbis-v3-api-test/html/test/common.js

.../tests/1/as/webapps/openbis-v3-api-test/html/test/dtos.js

...enbis-v3-api-test/html/test/openbis-execute-operations.js

...ebapps/openbis-v3-api-test/html/test/test-dss-services.js

...gins/test-processing-service/example-jython-processing.py

...cessing-plugins/test-processing-service/plugin.properties

...-plugins/tests/1/dss/reporting-plugins/js-test/js-test.py

...st/servers/common/datastore_server/etc/service.properties

...t/servers/common/datastore_server2/etc/service.properties

...a/ch/systemsx/cisd/openbis/jstest/report/V3APIReport.java

...msx/cisd/openbis/jstest/server/JsTestDataStoreServer.java

...ystemsx/cisd/openbis/test/server/TestDataStoreServer.java

...openbis/generic/server/asapi/v3/ApplicationServerApi.java

...s/generic/server/asapi/v3/ApplicationServerApiLogger.java

...c/server/asapi/v3/executor/common/search/NameMatcher.java

...erver/asapi/v3/executor/operation/OperationsExecutor.java