[feature request] add "Generate Failed" message

[cjdunn]

–Would be nice if Batch gave a "Generate Failed" message the way RF > File> Generate does when there's a problem. I know this is listed with the full traceback in the …Report.txt, but I think it would be helpful to have some indication in the UI. Ideally this would wait until the end and briefly list which files failed. For example:

Generate Failed: FontName-Bold.ufo FontName-Italic.ufo FontName-Regular.ufo

See report for an error log.

–Also, would be helpful in the …Report.txt if you gave a short summary at the top of the text listing just the fonts that failed, with "see below for full error log".

–Batch always creates a "Web Fonts Report.txt" file in the destination even when the files fail, but when I generate using the "Batch Generate" section I get the error listed in the RF output window when fonts don't generate, and only get the "Batch Generate Report.txt" when the fonts succeed. I would expect these to behave the same way, whether they fail or not, and the same for "Web Fonts" and "Batch Generate".

–Perhaps there could be a "Generate Report" option to output a …Report.txt file (default = On) and if this option is unchecked then the output will only print to RF Output window? Would be nice to have this option because in early stages when I'm troubleshooting I DO want the report. And once I know things are good and just making tiny changes I usually DO NOT want the report because I always have to throw this file away before sending font data to client.

Thanks for your consideration!