New Database tutorial section added

Thanks to Chris Kirkpatrick (who is now a member of the Lazarus-ccr project), the documentation section now contains a tutorial and sample application on how to write Lazarus applications using MySQL:

http://lazarus-ccr.sourceforge.net/index.php?wiki=LazarusDatabase

Chris has also made major contributions to the LazarusTutorial:

http://lazarus-ccr.sourceforge.net/index.php?wiki=LazarusTutorial

Thanks Chris!