install graphicsmagick on travis
no more notifications from travis please - thanks
mysql gem is already included by bundler

[ci skip]
trying to get libreoffice transmogrifier and sphinx to work
removed all uses of validate_on_create

This does not exist anymore since rails 2.1
moved no duplicate validation to Request parent class
removed DismodTransmogrifier
setting DelayedJob::Worker.backend in initializer
added 'inkscape' as dependency for travis-ci
validate_on_create still exists in 2.3.8... need to remove for 3.0
more use of validate_on_create where appropriate
empty array still was true. using duplicates.any? now
made requiest.with_requestable and .for_recipient work with nil
we don't allow networks to join networks anymore
requests_to_join_you duplicates are based on who created them - requestable is not used
validate_on_create - not validate, :on => :create
Merge pull request #4 from Crabgrass/feature/travis-build-green

Travis build green and covering all tests