Just setting up a switch on the type so that different dialogs can be instantiated. This also makes the extension type an enum because I don't see why not here and finally, it removes ControlGroupSizer. This removal allows to not dynamically generate the UI, but instead, let the specialised constructors do the layout.
Removed the unecessary forced tabbed layout, removed the layout part of the constructor and remade some method in preparation for tabbed styled input dialog such as the new hotkey configuration one. It breaks every inputconfigDialog, but this will get fixed in the next commits.
Also moved to a folder since there will be many more files created in the next commits so it gives better separation.
aldelaro5