RESUtils.addCSSpostLoad: for adding new chunks of CSS after `go`
userTagger.highlightUser-related options
modules.userHighlighter.doHighlight can now run after pageload using RESUtils.addCsspostLoad
modules.userTagger.highlightUser: userHighlighter.doHighlight the user currently hover-info'd
added [highlight] button to userTagger hover info
RESUtils.addCSSpostLoad refactored into .addCSS; RESUtils.postLoad = true after all modules .go()
when returning added CSS post load, also return an interface to remove that CSS
refactor userTagger.highlightUser into userHighlighter
user tagger highlight button now toggles highlight on/off
Merge pull request #344 from andytuba/userTagger-highlightUser

Add highlight to user via [highlight] button on user tagger hover info