Looks like the `webkitTransitionEnd` event doesn't fire because `fade`
is already on the modal, so there's no transition, which means that in
bootstrap.native the event doesn't get fired to remove the overlay.
This is mainly a testing tool, which makes a mode where all HTML bugs
which could slightly mess up the rendering will trigger proper errors in
the browser.
Fixes#1131.
This helps languages which use a different typography for the colon,
such as French which has a narrow non-breakable space before it, or
Japanese which uses a full-width colon character.
