Improvements to plot_monitor

* Allow calling plot_monitor programatically.
* Wildcard channel inclusion
* Option to turn off name shortening
docstring please.
In particular, I'm kind of confused about `show_codes`. Why would you call this function with codes? The codes are just a way to reduce typing by a human operator using the prompt. If you want to use this function programmatically, it would make a lot more sense to call it with (model_path, channel_name) tuples rather than the codes.