Missing journal macros in references

[wthrowe]

Some of our references use macros for journal names, but they don't seem to be working. I don't know if they are supposed to work and we need to fix them, or if we need to go through and get rid of them. Example:

A. J. Penner. General relativistic magnetohydrodynamic Bondi-Hoyle accretion. mnras , 414(2):1467–1482, Jun 2011. arXiv:1011.2976.

comes from journal = {\mnras},.