Checkpoint the visualization stuff. Rework Chad's stuff to match
current testbed software practices. Add a wrapper script to go from a pid/eid to the top file in the experiment directory. This means we cannot visualize experiments that are not active, but until we have a topfile generator that is independent of assign_wrapper, there is nothing to do about that. A makefile to install new tools. Also add a couple of web pages. The first web page spits out a page with an img tag which refers to another php script that generates the gif file with the backend tools, and stuff is out with an appropriate content header line. Very nifty.