Bring back Xvfb for Travis
Bring back Xvfb for Travis

Blazemeter/taurus,Blazemeter/taurus,greyfenrir/taurus,Blazemeter/taurus,greyfenrir/taurus,Blazemeter/taurus,Blazemeter/taurus,Blazemeter/taurus,greyfenrir/taurus,greyfenrir/taurus,Blazemeter/taurus,greyfenrir/taurus,greyfenrir/taurus,Blazemeter/taurus,Blazemeter/taurus,greyfenrir/taurus,greyfenrir/taurus,greyfenrir/taurus