random drawing has message if no attendees exist
handles login error if organization is invalid
when an organization is created, it is set to the user before saved to core data; prevents invalid organization from being loaded
when user logs out, the static organization is cleared
when a payment is removed from an attendance, the updated attendance is returned in the response. when an attendance pfobject is updated, if payment is nil it is removed from the db and reloaded.
when attendance is set to attended=1 it is also updated from parse and reloaded
removes logo image if one existed before and the new organization does not have one
updated SendGrid credentials to a test user; added a from: text box; removed default to and from fields
Merge pull request #30 from bobbyren/1.0.0/fixes

1.0.0/fixes