(#101) Avoid flicker of login/logout/denied buttons

[YannDoW]

Currently, the 3 login, logout and denied buttons are shown before that 2 of them are hidden, which causes an unpleasant flicker. This happens because the AngularJS code takes time to kick-in.
Adding the "ng-hide" class to them hide them by default. This way, only the correct button will appear, after a short moment.

[bramski]

I believe you are looking to us ng-cloak which does this exactly. NgHide is made for generally hiding elements. NgCloak could be applied to the root element on the template to prevent this.
https://docs.angularjs.org/api/ng/directive/ngCloak

[YannDoW]

Thanks for your answer @bramski ! As I recall (this was last year), I did try to use ng-cloak. But it did not work because these buttons are part of a fragment that is included quite late in the construction process. At least, this was my theory (I'm not an AngularJS expert!). So this was the only working solution I found.