deskutils/taskcoach: update to 1.4.4

Changes: https://www.taskcoach.org/changes.html

Bugs fixed:

• TaskCoach would not start on Fedora 23 using LXDE. This probably concerns

other distributions as well.

• Reminders would fire randomly or not at all.

Features added:

• Per-task effort total time consolidation, patch provided by rogerdc@gmail.com
• Add a viewer for task dependencies based on igraph (contributed by Matthias

Tafelmeier). Not available on all platforms.

Dependency changed:

• Task Coach now uses Mercurial for version control. This only affects you if

you want to develop or use Task Coach source code.

Reported by: portscout