More prefix options

[vbrown608]

They app currently offers "Mr.", "Mrs." and "Ms." as prefix options, with a note that gendered titles are required.

It looks like some reps do not require a title and others offer more options. Additionally, my understanding is that CWC doesn't require us to choose a title from a set list.

If it wouldn't introduce too much complexity, it might be cool to offer users the intersection of all titles offered by their reps that require that field. At the least, I think we should revisit this once we're using CWC.