CheatsDialog
- begin with implementation

MainWindow
- implement 'File->Rom Info...'
- implement 'File->Start emulation'
- implement 'File->Recent ROM'
- implement 'File->Recent ROM Directories'
- implement 'Help->About'
- implement language support

RomBrowserWidget
- implement settings to specify what columns are shown
- implement keeping width size of columns (on refresh)
- implement right click menu
