Beta 7 Released

I have finally got around to adding some more features and released a Beta 7 version:
- code is much more Object-oriented now and switching between Worksheet and Table view does not create a whole new connection to the DB (you still lose your results though since they are stored differently)
- worksheet mode is up to 100x faster now since I optimized all the string lengthening code (faster than table mode now)
- added export for both the current query as an sql file and for the worksheet results as a txt file.
- fixed Hot-keys so that Mozilla users can actually use Ctrl-Enter as well to execute a query
- added new Query Builder to let you visually create your queries (a little slow in Oracle with the free driver but if you have your own faster driver it should be plenty fast - ie, JTDs driver for SQL Server is plenty fast). Requires latest browers (IE 6+, Firefox 2+, etc).