Collects information on visitors' web browser and operating system and display totals for each type in a bar graph. Tracks the most common browsers (Chrome, FireFox, Safari, IE, Opera) and operating systems (Windows, Mac, Unix, iOS, Android) and tallies a total for each type. The information is then presented in a bar graph in the admin page. Currently, only the entities listed above are tracked. Version differentiations are not tracked - so, Windows is Windows regardless it it's Windows 95 or Windows 7.