* Use horizontal scrollarea for free games. Based on the same idea as
WrapperSettings scrollarea. Both need some adjustments.
* Remove debugging dialogs. Need a better way anyways to debug.
* Add a big back button in details page.
* Add static CSS to render QPushButtons as flat when the `flat` property is set
* Remove outer scroll areas from details page since the page is already adjustable
* Remove scroll area from the requirements widget because ElideLabels are already used in it.
* Fix crash when sorting the wishlist
