Make it possible to copy command line and other information from process treetable and properties dialog

[Karl-Philipp Richter]

The information provided in columns of the process tree table can no be copied (which would especially interesting for the process command line, but also for PID) as well as the information in the properties dialog of a process. This has no reason and it shouldn't be confusing to add a copy button (for the UI it would be nicer to have a cell based highlighting, but for instance copying the cell value based on the context menu position should be sufficient).

version information depend on https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/1325776

[Robert Roth (evfool)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.