removed br after ad
using jpeg's width and height in case sample's size isn't available.
this will fix the error in post#show of the image having 0 width and height
(thus not showing) if the image doesn't have a sample.
fixed error in #diff
moved Dmails per-hour limit to config.
also fixed error that caused users to be able to send limit + 1 dmails.
added link to Post->Moderate
locale for post#moderate in static#more