dialog displayed even if there's an unreportable reason

[Karl-Philipp Richter]

A dialog about a crashing application is displayed even if there's an "UnreportableReason" property present (which one only find when scrolling down the dialog). Displaying the dialog in that case doesn't make too much sense because the issue can't be reported with useful information and the user should either not be annoyed or get the opportunity to deactivate the displaying of the `apport-gtk` dialog if the report is broken.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: apport-gtk 2.20.4-0ubuntu4.1
ProcVersionSignature: Ubuntu 4.10.0-24.28-generic 4.10.15
Uname: Linux 4.10.0-24-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.4-0ubuntu4.1
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Thu Jun 29 10:29:35 2017
InstallationDate: Installed on 2015-12-12 (564 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: apport
UpgradeStatus: Upgraded to zesty on 2017-05-01 (58 days ago)

[Brian Murray (brian-murray)]

The UnreportableReason field does contain information about packages being out of date on your system. If I saw that message I'd update my system and try the operation again, so I think it is useful.

[Karl-Philipp Richter (krichter722)]

I've seen "truncated" report files being listed as `UnreportableReason`. In that case showing the reporting dialog doesn't make sense. I doubt that users who are not apport developers pay attention to that field without any further feedback/interaction from the apport dialog, but they should since if they're already willing to report bugs, they're most likely willing to update outdated packages.

[Launchpad Janitor (janitor)]

[Expired for apport (Ubuntu) because there has been no activity for 60 days.]