[LMS-1846] minor issues with messages and indexing

.../db/dynamic_property/DefaultDynamicPropertyEvaluator.java

...b/dynamic_property/DynamicPropertyEvaluationRunnable.java

...access/db/dynamic_property/IDynamicPropertyEvaluator.java

...c/server/dataaccess/db/search/DefaultFullTextIndexer.java

...ric/server/dataaccess/db/search/FullTextIndexUpdater.java

...ric/server/dataaccess/db/search/IndexUpdateOperation.java