Android: Massive thread safety overhaul. Not quite back to fully functional. WebView is having many complaints about not being on the UI thread... better to get this figured out early... All UI calls will be wrapped in a waitOnUiThread() closure. This is our version of Android's runOnUiThread() except it waits for the closure to finish running so we can return results... and also so that our calls will be in the order desired in the application.