Right align column data types patch

[Chin Huang]

Hello all,

Here is a patch to improve the aesthetics of how columns are displayed
in the ER diagram. Column data types will be right aligned in the
box, making the left aligned column names easier to distinguish. The
attached image shows an example of what I mean.

[Thomas O'Brien]

Hi Chin,

Thanks for the patch. I will try to make some time tomorrow to review
the changes so we can apply them to the source code.

Thomas