add posterior summary table to 1d histogram comparison pages

Hi @charlie.hoy one webpage feature that I'd find very helpful would be for the 1d histogram comparison pages, which currently already have KS and JS tables, to also include a posterior summary table: i.e. one row for each plotted posterior, and the same columns [maxL,maxP,mean,median,5th percentile,95th percentile] as in the main many-D summary table. Ideally (to me) it would be just below the plots and above the KS/JS as those seem more specialist info, but if you like the inclusion idea in general, you can of course decide on the design yourself.