Added support for "view" statements in named.conf.erb.  

All zones MUST be defined inside "view" statements if any views exist, hence why I had to wrap it all in a big if/else.  A view is a complex case because many of the options that can be specified as global can also/alternatively be defined inside a view.  This wasn't an exhaustive attempt to allow for the tuning of all the various knobs but just enough to cover my use case plus a little more.  I'm willing to make changes if necessary.