qt: refactor styles combobox and print the default style
- Currently style handling is handled in a really fragile
manner. The order of keys provided by
QStyleFactory
is expected to directly match the combobox. At the same time, if the style is not overridden, then there should be no need to save this in the settings. - Although the first entry is the default style, it does not provide what the style is. Now, the style itself is printed as well.
Request review @chub.