NOJIRA Handle disabled isPrivate Template save checkbox
SSP-1839 server side fix for improper exposure of Plan Template create, save and delete
SSP-1839 Allow public->private template conversion without pub perm

Previously a user without MAP_PUBLIC_TEMPLATE_WRITE couldn't make any
changes to a public template. Now we'll allow such users to demote it
to private, which should be just fine, either because it's your own
template, or it was somebody else's in which case the edit creates a
copy.