added sharing buttons. not sure I like them, but y'know.
Counter Cache - in progress
took out superfluous 'if .present?' on association counts. Took out the 'enhanced' redirects after devise sign_up/sign_in because it took people out of the sign up flow.
Was missing 'Array' from the setlist serialize on the concert model
venues & locations fix. when adding a concert to a venue, it checks to see if the location is the same first to account for venue names that aren't unique.
added a concerts_cache column to users, so that I can properly sort the users#index page by concert count. Need to add other count caches later
merged in the cache_count branch
added a concert_count column to the bands table
fixing a bug in deleting a concert
switched the band field to allow seperation by semicolons instead of commas