In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

Seems no longer included transitively in Qt 5.13.

In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

Time to increase Qt version as we use override but qt5.7 doesn't support it and we use 5.7 from long time

BUGS: 402655

Summary:
There was various threads using the same kconfig[group] at the same time, so bad things happened.
Add a mutex

BUGS: 398416

Test Plan:
Run
  rm -f ~/.config/palapeli* && palapeli
a few times, see it doesn't crash anymore

Reviewers: #kde_games

Subscribers: chehrlic, kde-games-devel

Differential Revision: https://phabricator.kde.org/D16118

Otherwise we're casting an event to class it's not and that's undefined
behaviour

Give m_updateTimer a parent so it's automatically deleted by it when
it's destroyed