Merge pull request #57 from Skud/mapbox

Replaced cloudmade maps with mapbox
add travis badge to readme
Merge pull request #58 from gregmolnar/readme

add travis badge to readme
Merge pull request #59 from Skud/mapbox

added 3A mapbox IDs
added email flag to user
Added 'send email' field to account settings
Added mailer to send thank you emails when a site is added
Made everything use Figaro instead of the previous mess
switched all figaro stuff to use ENV so it doesn't break on travis-ci
removed figaro command from travis.yml (that never would have worked)
oops, missed a Figaro.env
fall back to something for mailing, because travis barfs otherwise
and another place to fallback with an email address
Merge pull request #60 from Skud/email

Email
Modified email text as per Kate's request
Rake task to send "thank you" emails for added sites.

NOTE: this is NOT in deploy-tasks.sh as we don't want to accidentally
run it twice.  Just a note that when deploying this feature, we'll want
to run the following command manually:

heroku run rake acres:oneoff:send_added_emails
removed unused port option from config
added URL to email signoff
delete watches if a user account is cancelled
Say 'deleted user' if a site adder has cancelled their account