Added addresses and hosting to sponsors
Added sponsors as hosts to events
Added nice flash if the sponsor doesnt have a full address
Only one host per event
Only show non hosting sponsors in sponsors div
Misc cleanup
Merge pull request #110 from railsgirlslondon/add_hosting_and_addresses

Add hosting and addresses
Add make target for copying production DB to staging
add title to event
format event dates: 2 days in the same month
two days over two months
format one day even date
use dates and title to views
remove wip
include dates in registration_mailer subject
and fix specs
tidy up event model
fix event feature
Merge pull request #112 from railsgirlslondon/improve-event-title

Improve event title
raise routing error if city doesn't exist
display event dates, not title