[Bugfix] conference top submitter now ordered by submissions
Merge pull request #267 from ChrisBr/bugfix_top_submitter

[Bugfix] conference top submitter now ordered by submissions
Implements targets and campaigns for conference
Merge pull request #266 from ChrisBr/implements_ahoy

Implements targets and campaigns for conference
User/Person models merge
houndci fixes
fix biography field as text, not string
hound fixes
style fixes