[x] fix issue where local builds take a long time presumably because hovercards are being recursively built
[x] fix issue where local dev reloads add multiple levels of div.paragraph wrappers, which cause newlines to be insert before and after hovercard hyperlinks
[x] prevent hovercards from appearing within hovercards; right now, whether a hovercard opens within a hovercard depends on which order the hovercards are inserted during the build process
[x] design for case where user hovers over hoverlink inside an existing hovercard
div.paragraphwrappers, which cause newlines to be insert before and after hovercard hyperlinks