TableColumns must be much different from rows, because I couldn't
get the properties/width of those, and even MRI just threw a
VOID message when trying to getByIndex. So I couldn't do any
specific column-width tests, just table-width.

Similarly, I couldn't do simple table-height tests.

Change-Id: I4c1deaf6a4f6beb7325467ac9940f4328cfc1d44
Reviewed-on: https://gerrit.libreoffice.org/65768
Tested-by: Jenkins
Reviewed-by: Justin Luth <justin_luth@sil.org>