Removes gradient colors from the FPS meter.
Moves the slow path in getNamespaceResolutionMap into another function so that the fast path is optimized in Chrome.
Stop using strokeRect since it's terribly slow.
Change Easel key bindings, you now must also hold ALT/Option.
Uncomment background color change.
Merge pull request #1924 from mbebenita/master

Mixed bag of small optimizations.