changed file perms to make user zero script executable.
updated composer lock file with latest deps.
Remove redundant search for user

This line was breaking phantomJS.  It wasn't testing anything new, just a repeat of the add directors search above so I pulled it out.
Merge pull request #582 from jrjohnson/fixcoursetest

Remove redundant search for user
Merge pull request #579 from stopfstedt/zero_user_install_script_executable

changed file perms to make user zero script executable.
Merge pull request #580 from stopfstedt/phpunit_update

updated composer lock file with latest deps.