Clicking on the widget too soon after page load results in the Text Bar not being properly attached

Due to the timer used at [line 242 in CornerWidgetUI.js](https://github.com/lucep/CornerWidgetUI/blob/master/js/CornerWidgetUI.js#L242) if the widget is clicked on too soon, the CSS change is applied afterwards, temporarily resulting in an incorrect visual layout.
