Fixing text buffer texture/font corruption (#479)
* #479 demonstrates that the contents of the text buffer are NOT irrelevant for reproducing bugs. So I set up recording/replay for the burma shave easter egg. This also makes an easy way to mess with the buffer state when debugging (just mash &/\*/&/\*/&/\* n times)
* When a replay throws an error, it puts up a showError() dialog. If the next action is a control_click, the system will try to click that control on the error dialog--which is totally divergent from the replay's intended behavior. So we should just stop replaying when an error happens.
* If you have a long replay and want to run it very fast, but then slow down when you get to the sequence that reproduces your bug, now you can add a `<change_fps>` to your replay to achieve that.
* Fixes for the 2 legacy replay errors that I opened recently
Fix#479Fix#532Fix#533