D29082: WIP Dolphin Service: Show error message when uninstalling packages

[Alexander Lohnau]

alex created this revision.
alex added reviewers: Dolphin, ngraham, nicolasfella, elvisangelaccio.
Herald added a project: Dolphin.
Herald added a subscriber: kfm-devel.
alex requested review of this revision.

REVISION SUMMARY
  The binary packages(deb and rpm) can't be uninstalled like the other packages.
  Before the installer would give an error message that the deinstallation failed,
  now the error message contains information on what to do.
  
  WIP: If you think that an option to run a deinstall command should be executed instead, I will implement it.

TEST PLAN
  `servicemenuinstaller uninstall somepackage.deb`

REPOSITORY
  R318 Dolphin

BRANCH
  deb_rpm_uninstall_msg (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D29082

AFFECTED FILES
  src/settings/services/servicemenuinstaller/servicemenuinstaller.cpp

To: alex, #dolphin, ngraham, nicolasfella, elvisangelaccio
Cc: kfm-devel, azyx, nikolaik, pberestov, iasensio, aprcela, fprice, fbampaloukas, alexde, Codezela, feverfew, meven, spoorun, navarromorales, firef, ngraham, andrebarros, emmanuelp, rdieter, mikesomov
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