fix exact search (#4640)

* disable select all text when clicked

* fix exact match search

* small fixes

* improve fuzzy search

* ignore invisible characters in search

* feature to navigate and scroll multiple search results in the same section

* add keyboard shortcut for highlight matches and also combine nearby highlighted matches

* comments

---------

Co-authored-by: nbats <44333466+nbats@users.noreply.github.com>

docs/educational.md

@@ -1411,7 +1411,7 @@
 
 * 🌐 **[nanoHUB](https://nanohub.org/)** - Nanotechnology Tools
 * 🌐 **[5th STAAR Resource Curation](https://docs.google.com/document/d/1vxxEKhZe_7dd1XIxl_sETsqP__Rf-yPAnBhtwf8huKU/edit?usp=drivesdk)** - Grade School Tools
-* ↪️ **[Presentation/ Slideshare tools](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/storage#wiki_presentation_tools)**
+* ↪️ **[Presentation / Slideshare tools](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/storage#wiki_presentation_tools)**
 * ↪️ **[Data Visualization](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/storage#wiki_data_visualization_tools)**
 * ↪️ **[Grammar / Spell Check](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/text-tools#wiki_.25B7_grammar_check)**
 * ⭐ **[Excalidraw](https://excalidraw.com/)** / [Sharing](https://excalihub.dev/), **[OpenBoard](https://openboard.ch/index.en.html)**, [DGM](https://dgm.sh/), [NotebookCast](https://www.notebookcast.com/), [WebWhiteboard](https://webwhiteboard.com/), [Microsoft Whiteboard](https://apps.microsoft.com/detail/9MSPC6MP8FM4), [WBO](https://wbo.ophir.dev/), [OurBoard](https://www.ourboard.io/), [Whiteboard.fi](https://whiteboard.fi/) or [Whiteboard Fox](https://r3.whiteboardfox.com/) - Whiteboards