Update notes
Improved styling of event tabs
Pretty error boxes

Not quite done yet. (Notably for radio buttons)
What I really meant to commit for pretty errors

I didn't mean to commit the big section of commented text in the css.
Update notes from user testing
Alert no longer shows up if blank
Pretty alerts
Merge branch 'master' of https://github.com/scotthue/unicycling-registration
Deals with the gender radio buttons special, so that they get highlighted correctly. Closes #25