Why no more “python-support” in 16.04?
Had the same issue when trying to install GateOne on 16.04. Solved it with:
wget http://launchpadlibrarian.net/109052632/python-support_1.0.15_all.deb sudo dpkg -i python-support_1.0.15_all.deb
Source: https://github.com/ajenti/ajenti/issues/903#issuecomment-215569332