How to set Favicon and Page Title in Responsive Builder landing pages

The responsive builder is a great way for users to build quick and reliable landing pages, with lots of flexibility in structure and templates offered.  It's really easy to use, surprisingly intuitive, and the code output is decent. But it does have its limitations.

There are two tiny things that I would expect to set on any web page: the page title and the shortcut icon, known as a "favicon". These are used in bookmarks, in browser window title bars, and in the case of search engines, the page link text.

Each one is just one line of HTML, and it boggled my mind that neither is available as a standard setting, nor can you use the "Additional Meta Tags" box to add them - both <title> and <link> tags are stripped out when you save.