CS fix
Add a Development fixture for test competitions
Add AccountAdmin behat test for CompetitionAdmin RBAC type
Fixed up Travis-CI test run failures
Closes #31

    Fix PHP 5.4 incompatibility (Can't use method return value in write context)
    Dump HTML of pages that result in failure
    Sort results of find command so that files are processed in a predictable order
    Update HHVM FastCGI configuration
    Disable Behat on PHP 5.6
    Bump Behat to 2.x@stable
    Remove stray behat.yml file
    Add missing fields to CompetitionAdmin competition create feature
    Adjust AccountAdmin RBAC role type feature files to account for IDs already used by fixture data
    Remove unnecessary (and incorrect) step from AccountAdmin edit.feature
    Add screenshot upload on step failure to CompetitionAdmin and AccountAdmin behat tests
    Set screen size of Xvfb to 1600x1200