Search plugin: matched text is replaced with search text

[jhildenbiddle]

The search plugin replaces matching text with the search string. The search plugin should not replace matching text, only highlight it as-is.

For example, a search for “ReSpOnSiVe” will do a case-insensitive search to find “responsive”, but then replace all occurrances of the word “responsive” in the search results with the search string "ReSpOnSiVe". This is an issue on mobile devices where input fields automatically capitalize the first letter.