Merge pull request #1618 from tschneidereit/master

Execute queued Loader operations before frame events in main event loop
Waits committing frames until initial data is loaded
Merge pull request #1619 from yurydelendik/reftest

Waits committing frames until initial data is loaded
Overlay SWF on top of inspector.
Merge pull request #1620 from mbebenita/overlay

Overlay Flash on top of inspector.
Add inspector option for Flash overlay

Enables toggling the overlay at runtime, too.