* web: quick fixes in glossary.md
* website: update header tags
* website: add glossary feature
* website: add & style the tooltips & glossary terms
* website: add overlay for glossary definition
* website: add list styling & update links
* website: fix tooltip alignment against multiple terms
fix the issue of aligning tooltip if page has multiple terms against it
* website: close already opened glossary overlay
close the already opened glossary overlay before opening another
* website: add popups for terms inside popups
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Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>