Merged: Add time to auth.py

Author: Tzafrir Cohen <tzafrir@debian.org>
Desription: Missing import from auth.py
http://git.tzafrir.org.il/?p=plinth/plinth.git
Simplify authentication code.
Merged: tzafrir's install_dir patch.

Author: Tzafrir Cohen <tzafrir@debian.org>
Description: These things are easier to install with dh

* Python modules: fighting with dh_python2 is tough
  (it changes the /etc/ symlink, for isntance)
* Let's just install man pages ourselves for now.
* symlinks: with dh_link
Merged: tzafrir's novendor patch.

Author: Tzafrir Cohen <tzafrir@debian.org>
Description: "vendor" packages are installed as separate system debs