* Don't create path when preparing overlay download, it fails on updates.
* Concatenate the overlay install path in InstallDialog instead of passing it as `base_path`
* Respect RareGame state in in the EOS overlay form
* Uninstalling the Overlay now goes through the same procedure as
uninstalling any other game.
* The available prefixes are now listed instead of hiding them inside
a combo box.
* Each listing works indepedently to enable/disable the Overlay for the prefix
* Load and populate Ubisoft information when the page is shown instead of startup.
* List all Ubisoft games, and differentiate based on whether they been redeemed.
Widgets that need to implement a title should be of a dual subclass
of any `QWidget` subclass and the `SideTabContents` class which provides
the signal.
