hide links and before_filter in layout and snippet controller for admin only access
default value of published to unchecked on new page form
commented out slugify method because it featured non utf-8 characters, testing to see if this breaks when coffee is compiled
downgraded codemirror js to 3.0.2 because it has known issues with turbo sprockets, https://github.com/ndbroadbent/turbo-sprockets-rails3/pull/64
update codemirror, allow slugify method again