Html replacement instead of text replacement

Hi!

I've updated the plugin with the ability to:
* replace the html of a target item instead of it's text. This prevents any html elements inside the item to be stripped
* replacement of html only occurs when text should be highlighted


I've also added ignores for intellij idea to the gitignore files


Let me know if you think these are useful additions to you plugin. Thanks for creating it!

Kind regards,
Jaap-Jan