Server-side and client-side error messages now match up.  Added RunnerException, StopException, and AnalyzerException to errors.py.  Added run fields to gtfar-email
Merge branch 'master' of https://github.com/pegasus-isi/pegasus-gtfar

Conflicts:
	pegasus/gtfar/views.py

Fixed issue with displaying run items (use array indices instead of attributes)
Fixed issue with displaying run items (use array indices instead of attributes)