#165: Add bindings for SetZoomLevel in WinForms
Fixed the tick frequency, based on what cefclient has + fixed Camel Casing of a label. Also fixed the Minimum/Maximum values using some trial and error, to see how high/low we may go. 
Moved to a more suitable location in the class.
Fixed up the whitespace. @peters - try to more closely follow the existing whitespace/brace positioning style next time.