DURC errors are not logged

[ftrotter]

When an error is thrown in DURC, the error is caught and the last line is shown in the 'notification' area.

• This notification should be using the bootstrap error class, rather than the default notice class.
• This error should be sent to whatever the current logging system is.

I think it is reasonable not to log the "you wrote the wrong content here" errors... but all other errors should all the way to the log file...