using xvfb and firefox to run functional tests
sourcing /etc/profile immediatly in case travis is running everything in one shell
re-enabling functional test, should work with Firefox WebDriver
Merge remote-tracking branch 'origin/develop' into xvfb-firefox
Merge pull request #357 from jacksingleton/xvfb-firefox

Using Firefox and Xvfb instead of PhantomJS and enabling submit_and_retrieve_file functional test