[Users] Showing stacktrace info in GUI error dialog

[Einav Cohen]

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. 

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Thanks,
Einav

[1] http://gerrit.ovirt.org/#/c/23096/