Support pretty error messages

[adamfowleruk]

Would be great to have an error message summary that was prettily printed, with colours, bold text, and highlighting. Gets hard to read the default XML dump in Roxy/error logs.

[prestonmcgowan]

Pile on comment:
When I am hacking on the role configuration, sometimes I mistype a role name and a role therefore does not exist for userB, .. In this circumstance Roxy will create the mistyped role, and error that the role does not exist for B.

A better error message for missing roles etc would be good.

[dmcassel]

I think the reason I tend to not work on this is it feels too big. Breaking this into tickets for specific cases would probably get me to solve at least some of the problems sooner. I'll put in a ticket for the role problem.

[grtjn]

Agreed. I also think Roxy already captures errors and exceptions in most cases, and just prints the format-string in those cases. Please open new ticket for specific cases if you come across large error dumps after all..