allow user to set <title> independently from <h1>
Created by: shaefner-usgs
Sometimes it's desirable to set <title> to a different value than <h1>. The specific use case I have is that I want to give multiple "sibling" pages w/ the same <h1> tag (but different subtitles) a unique <title> tag to assist the user navigating their history within an app.
It works as expected if you just include a $TITLE var (both <title> and <h1> are set to $TITLE), but if you also include a $TITLETAG var, this value will override $TITLE for <title>.