[WFCORE-113] Add a suffix option to the size-rotating-file-handler.

I'll apologize in advance for the large commit. Adding the attribute for [WFCORE-113](https://issues.jboss.org/browse/WFCORE-113) made me realize how horrible the logging resource description resolver was.

The first commit removes the custom `ResourceDescriptionResolver` and switches to using the resource bundle as expected.

The second commit is the commit for the JIRA. It adds a `suffix` attribute that can be appended to files rotated by size.