Improvements to plot_monitor

* Allow calling plot_monitor programatically.
* Wildcard channel inclusion
* Option to turn off name shortening
ok, so wildcards only let you match different model paths, not different channel names? wouldn't it be better to use the re module to do actual regular expression matching? If you want to match all model paths the full regex matching protocol will let you do "channel_name:*".

This approach also lets you request non-existent channels which will then presumably result in some kind of crash.