LMS-1027 dataset processing plugin for Yeastx

...va/ch/systemsx/cisd/common/filesystem/FileOperations.java

...h/systemsx/cisd/common/filesystem/FileOperationsTest.java

...ystemsx/cisd/etlserver/AbstractDatasetDropboxHandler.java

...server/AbstractDelegatingStorageProcessorWithDropbox.java

.../systemsx/cisd/etlserver/StorageProcessorWithDropbox.java

.../generic/server/plugins/demo/AbstractDatastorePlugin.java

.../server/plugins/demo/AbstractDropboxProcessingPlugin.java

...neric/server/plugins/tasks/AbstractPluginTaskFactory.java

...sd/etlserver/AbstractStorageProcessorWithDropboxTest.java

...eneric/server/plugins/tasks/PluginTaskParametersTest.java

...openbis/generic/server/business/bo/ExternalDataTable.java

...x/cisd/openbis/generic/shared/dto/DatasetDescription.java

.../cisd/yeastx/etl/AbstractDatasetDropboxHandlerYeastX.java

...stemsx/cisd/yeastx/etl/DropboxProcessingPluginYeastX.java

...stemsx/cisd/yeastx/etl/StorageProcessorWithDropboxes.java