remove trailing whitespace
request not needed
send out acceptance email, text needs to be updated.
add rejection email, content needs to be updated
find cards by label and move to list
retrieve cards and move to lists
add selection_state to registration
remove trailing space
update event_trello
processing applications
send emails to rejected applicants
allow number of slots to be configured
merge master in
update mailer test, rejection email does not include dates
Merge pull request #125 from despo/handle-registration-emails

Add ability to send emails to accepted/rejected applicants