[Users] Showing stacktrace info in GUI error dialog

Hi, this is about patch [1] - showing server-side-exception stacktrace info in GUI error dialog. a couple of notes about this patch: (1) I find it a little strange that server-side exceptions are not logged in the server side and are / will be displayed only on the client-side - this needs to be fixed first. (2) once everything is logged on the server side, we can debate whether it makes sense to put the full exception stack-trace *also* in the GUI error pop-up. I think that it is not completely necessary (since if there is a server side exception, the user is likely to go to the server side log anyway to get the full picture / context), but if it is (and I'd like to hear your opinion about that) - we shouldn't show the entire exception in the dialog once the dialog is displayed - that's too much information to absorb. We should show whatever we are showing today, and also something like a "More Details" collapsible section (collapsed by default) that, when expanded, displays the full exception details. comments are welcome. ---- Thanks, Einav [1] http://gerrit.ovirt.org/#/c/23096/