Make it easier to correlate the grid columns headers to fields

[waldoj]

As the grid on the home page gets taller, the header row is scrolling out of view. So it becomes difficult to figure out which field belongs to which column. Figure out how to address this.

One way to do this is to fix the thead, so that it doesn't scroll out of view. It looks like there are at least a couple of jQuery plugins that accomplish this (floatThread and Sticky Table Headers). The one catch is that I think that both require that the table be put in a DIV, so that it scrolls within the DIV instead of within the page. That's not great, but not a deal-breaker.

Also, we could repeat the thead periodically, every 10–15 rows. That might be confusing to people, though.