LMS-1767 Added tests that check escaping of strings.

...is/generic/client/web/server/CommonClientServiceTest.java

...ystemsx/cisd/openbis/generic/server/CommonServerTest.java

.../systemsx/cisd/openbis/generic/server/ETLServiceTest.java

...x/cisd/openbis/generic/shared/AbstractServerTestCase.java

...nbis/systemtest/api/v1/GeneralInformationServiceTest.java

...systemtest/plugin/generic/ExperimentRegistrationTest.java

...bis/systemtest/plugin/generic/SampleRegistrationTest.java