Don't fire onAfterTab twice & check tab's there
Don't fire onAfterTab twice & check tab's there

Related to #203

Jaesin/OctoPrint,Jaesin/OctoPrint,Jaesin/OctoPrint,foosel/OctoPrint,foosel/OctoPrint,foosel/OctoPrint,Jaesin/OctoPrint,foosel/OctoPrint