Storing a completely null date should result in a null value. Additional unit tests on dates too.
Fixing Postgresql driver issues
Fixing optimistic-locking issues. For databases that do not have an actual auto-updating timestamp, you can have QCubed do it for you.
Removing unused function.
Changing so that trying to draw a null date and time results in an empty string.
Merge pull request #513 from spekary/bugfix-StoringNullDates2

bugfix-StoringNullDates