Changes for HCFS including:  1) templating changes to remove HDFS
options in the install wizard when HCFS is selected.  2) changes to
generate HCFS appropriate configuration in core-site.xml 3) a stubStack
flag in initialize.js that lets us work with the existing server...this
will disappear when the updated stack is available from the server.  To
disable this functionality set App.stubStack = false in initialize.js.