#293: The MainView is now called BrowserTabView, to be able to introduce a new MainView.
Whitespace fixup.
WIP on #293.
Merge remote-tracking branch 'remotes/upstream/feature/fixed-tabbed-browser-architecture' into feature/wpf-tabbed-browser

Conflicts:
	CefSharp.Wpf.Example/Views/Main/MainView.xaml