fix most strict mode warnings Fixes #109

This takes care of most of the strict mode warnings and really cleans up the console, allowing you to more easily differentiate between your bugs vs bugs in the inspector.  There's a ton in the syntax highlighter, which I should just fix upstream, so they're not in this patch.  There's also one [colossus mega function](https://github.com/benvanik/WebGL-Inspector/blob/7185ad7db30f1c9318fe9268ef88120fb9ce8754/core/ui/pixelhistory/PixelHistory.js#L160-L272) that I punted on because it closes over so many variables.  I'll open a new bug for that.