Generate Legend HTML Pages with winform controls

[Parker147]

The HTML pages were originally used because it was simple to generate the content for the legend pages. As I have added more data to these pages they have become a bit bulky and difficult to browse through at times. This issue could possibly be fixed with some other HTML techniques, but I think winform controls will offer better flexibility.

I also believe it would cut down on some memory usage, since generating huge HTML pages can take up a lot of memory.

Another issue with this is that the WebBrowser control is not supported under Mono for Macs. In the hope to eventually make Legends Viewer cross platform we will need to move away from the WebBrowser control anyways.

I haven't thought out a lot of the details about going about this yet.