adding in number formatting suffix

Did a bit of basic testing and was able to create a new form with text elements that used a number suffix option.

Not 100% sure on whether I picked the correct next highest ele_value. I found no larger values in the element_options_save for text elements, but couldn't find any reference to derived types in there. There seemed to be some type insensitive references to ele_value[5] though so I skipped to [6] for derived values.