angularjs: fix init logic The run_prettify.js link hasn't worked for years, so updae it to the current cdn we use in other pages. The styleguide.js link has always been broken. Fixing that requires tweaking how the TOC works. We drop the static one in favor of the dynamic (like other styleguides), and drop the custom <base> setting so all links open in the current tab (like other styleguides).