Added a nice little StatusBar, with working IsLoading progress indication! Also display the console message in this bar.
Refactored the ILoadHandler to be an event handler (LoadError) in IWebBrowser instead of a separate interface you have to implement (it only contained one method anyway, so a bit overkill).
Changed OnLoadError to use a CefErrorCode as the error code + implemented the CefErrorCode enum + added the LoadHtml() method into the IWebBrowser interface again, and implemented it in the WebView.
Implemented a simple LoadError handler.
Fixed the WebBrowser to receive focus once page loading is complete, so that e.g. Google works in the expected way (you can start typing a search string immediately, without having to click the search field).