Use ToolTipWidget::SetDescription insead of QWidget::setTooltip to put
the description in the BalloonTip with the title, instead of having the
description be in a separate standard tooltip.

Creates a layer outside the game config layer system and passes it to the created gfx widows, so as to not interfere with the global config system.

Supports multiple game properties being open at once.
Supports editing while a game is playing, but the options only save and update the active game when the window is closed.
Right-clicking will remove a property from the game ini.

qOverload is used to disambiguate pointers to overloaded functions, but
most of the usages in the code base were with non-overloaded functions.