[Merge] lp:~osomon/webbrowser-app/qt53-workaround-QTBUG-39255 into lp:webbrowser-app

[Olivier Tilloy]

Note: this is not enough to make webbrowser-app fully work on armhf with Qt 5.3 as of today, as there is still a crash with String.replace(re, …) (see https://bugreports.qt-project.org/browse/QTBUG-39289).
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https://code.launchpad.net/~osomon/webbrowser-app/qt53-workaround-QTBUG-39255/+merge/220985
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~osomon/webbrowser-app/qt53-workaround-QTBUG-39255 into lp:webbrowser-app.