show a dotted border around the first autopopup item instead of preview

preview is distracting, doesn't show the full text to be inserted
and there seems to be no way of showing it together with the typed prefix
prevent MinusculeMatcher reentrancy
don't pass around isAsciiName, use MatchingState for that
some docs for MinusculeMatcher
Specify Language Defaults, remove unnecessary attributes
Allow to programmatically override default level of highlighting for certain files; don't highlight minified and library JavaScript files (WEB-921)
WI-16546 Search in Settings: Make association between some keywords for deployment and Deployment settings