SQL Explorer 3.6.1 SR5 relased

This service release contains some minor fixes and changes. In detail:
* Fixed tab delimiter in CSV export
* CSV export: added support for date formatting according to preferences page during export to csv
* Fixed truncation of CLOB data caused by getString()
* Added new Results preference to define max length of CLOB data to read, default is 10,000 characters
* Added new Results preference to define character set to use for displaying BLOB data, default is using system character set
* Added logging of all exceptions to detect suspicious NPE on query execution