* Work around a bug in Qt 5.11 where only the top/bottom half of
the window is used. This workaround is incomplete, but fixes
the majority of the cases where this happens.
* Work around keyboard focus issues with Qt 5.11.
* Work around an issue in Qt 5.11 where e.g. activating
JavaScript per-domain needed a manual reload in some cases.
* Don't crash when a ² key is pressed (e.g. on AZERTY keyboards).
* Don't crash when a tab is opened and quickly closed again.
OBS-URL: https://build.opensuse.org/package/show/network/qutebrowser?expand=0&rev=37
