Created by: gaearon
Last thing I wanted to fix before cutting 1.0.
This changes z-index to the actual max possible value (and one below for runtime overlay).
It also changes the logic to prevent dismissing the syntax overlay right before the page reloads. Now we only dismiss it when the page is guaranteed to stay (which is when? I’m not sure but maybe it’ll make more sense in the future).
Anyway, the point is that compile overlay should no longer disappear in flicker, just to be refreshed a few milliseconds later.