- Get the scroller orientation from the xib.
- Fix the nonsensical calculation of _isVertical when given bounds.
- Since orientation comes from the xib, had to re-nib2cib everything to be safe.
Also clean up test a little by initialising the array controller in the xib and connecting the buttons there. This is more natural.
Also make each object created in the table numbered to make it easier to see which one was just added.