distinguishing between errors and warnings in file problem totals

This seeks to enhance the reporting for warnings and errors. Distinguishing between errors and warnings is useful for situations where we want to fail on errors, but not on warnings (using a custom error reporter) and instruct the users what to do. Displaying the number of errors versus warnings is extremely useful. I also added padding to the beginning of those lines to make them more visually pleasing and line up with the line-item problem info.

Compounded output, warnings and errors.
![Imgur](http://i.imgur.com/Q4bGpPf.png)

When errors and warnings both exist.
![Imgur](http://i.imgur.com/SkRsK0B.png)