Fixes T8154. Now you can tell when a Conpherence was started by mousing over the date. I think this is sufficient.

This ends up cleaning up the code significantly; it used to inherit from some transaction view class and had built up lots of cludge over time. Much cleaner now.

moused over tooltips in both durable column and full conpherence and saw correct full dates. clicked on a timestamp in durable column and went to right place in full conpherence.