Ubuntu packages now on Launchpad

Starting with release 6.2.1711 Ubuntu packages are now hosted on Launchpad.

Stable: launchpad.net/~ngsolve/+archive/ubuntu/ngsolve
Nightly: launchpad.net/~ngsolve/+archive/ubuntu/nightly

Please remove the old repository before updating, instructions to do so are for instance here:
askubuntu.com/questions/43345/how-to-rem...wertab=votes#tab-top

To activate the new repository follow the instructions on the Downloads page