LMS-2474 Work on adding varchar managed properties in their own page.

...ared/basic/dto/ManagedMultilineTextWidgetDescription.java

...penbis/generic/shared/basic/dto/ManagedUiDescription.java

...s/generic/shared/basic/dto/api/IManagedUiDescription.java

...generic/shared/basic/dto/api/ManagedOutputWidgetType.java

...ric/shared/managed_property/ManagedPropertyEvaluator.java

...is/generic/shared/translator/PropertyTranslatorUtils.java

openbis/source/java/service.properties

...shared/managed_property/ManagedPropertyEvaluatorTest.java

...rty/structured/StructuredPropertyConverterPythonTest.java