travis: make methanol/imc test longer
travis: make methanol/imc test longer

junghans/csg,MrTheodor/csg,votca/csg,votca/csg,MrTheodor/csg,votca/csg,junghans/csg,junghans/csg,MrTheodor/csg,junghans/csg,junghans/csg,MrTheodor/csg,junghans/csg,votca/csg,MrTheodor/csg