Accessibility evaluation

[jglovier]

Per our 🍖 🎇 convo this morning with @tangollama and @jkleinsc, we really need to start defining what accessibility means for HospitalRun. We know how we can approach it from a technical standpoint, but we need someone who knows app accessibility better than any of us to take a look and give us an evaluation before we spend a bunch of time trying to solve for the wrong problems.