removed useless view/url
admin add_event page now lets you add sessions directly
minor refactoring of admin event page
configured read-only 'hours' field; fiddled with volunteers admin view; added new fields to session
removed unnecessary URLS; left volunteer-search, which I will build with bootstrap, and volunteer-browse, which is for showcasing that townsquare works right now.
re-instated county_toward_volunteer_hours variable