* improved uploading of files
- new core/UploadDirective to allow dropping files to any html element
- enhanced file dropping for DataTable rows (disabled by default)
- enhanced file dropping for DocumentList rows (disabled by default)
- upload drop area now handles file uploads for child elements (i.e.
rows in the document list)
* fix unit tests
* unit tests and code cleanup
* #1732, fix upload of folders
* showing selected row
Support for showing selected row for the components:
- DataTable
- DocumentList
- Activiti TaskList
- Activiti ProcessList
fixes#170
* unit test fixes