Add a welcome dialog to the HTML5 editor
Add a welcome dialog to the HTML5 editor

This modal dialog displayed when the page is loaded. It can be
dismissed permanently by clicking the "OK, don't show again" button.
Clicking outside the modal will only dismiss it once.

This dialog is used to remind people that the HTML5 editor is still in
release candidate stage and isn't considered production-ready yet.

(cherry picked from commit 8b0814689423857efd05f1b2c2f16973202cfe1b)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot