Exclude known binary files (squashed)

This is a squashed version of, and replaces, https://github.com/adobe/brackets/pull/7628

Avoid searching known binary files, as defined by the LanguageManager, for Find in Files, Quick Open, and JS Quick Edit.

cc @JeffryBooher, @RaymondLim, @peterflynn, @TomMalbran, @SAPlayer