Stable 2.8

This version removes support for or_other in selects. We remove the or_other feature because if a select has it and another doesn't, the type could change between int and char and vice-versa, producing incorrect field types within a form and across sub-versions.

Also, we consider or_other a bad practice because it assumes that the code for other is "other" and the variable to store the other is [variable]_other when this could be different across languages.