On Friday, November 22, 2013, A.L.E.C wrote:
I'd like us to consider also removing redundant jquery-ui dialogs on
error messages or display only dialogs.

Yes, that's indeed something to consider.

The reason these popups appear on errors is because of the previously less visible status messages. That now has improved and maybe it's good enough without popups. But still, errors should not happen and if they do, the error messages must not be missed by the user. That's why I decided to keep them even after the recent improvements.

I don't have a strong opinion about which one to choose, but we should
choose anyone.

Displaying dialogs for every message, especially confirmations is definitely not the way to go. That would be way too intrusive and annoying.

There's also a small issue with this, the jquery-ui dialog disapears
sooner than the message in right-bottom corner. Not a problem if we
decide to remove one of error message elements.

That's true and it always was that way. The popup is meant to catch the user's attention about an error and it then moves away towards the right (previously towards the status bar at the bottom) where the error message is still visible and can be read again and again. I don't think that's too bad.

~Thomas