queries, css, post_action

(1) Thread, history, and profile loops consolidated to main getposts (2)
reply form moved to bottom of thread (3) 2 queries removed (both checked
whether or not the current user was the last reply and whether or not
the current user created the thread).  This check mechanism has been
moved to a more efficient method. (4) _post_action checks for the
presence of _wp_http_referer, and has had timegateactive deactivated if
password field is present (which is only present during editing).  This
also fixes editing. (5) #omitted given a border (border-top: 1px solid
rgba(255,255,255,.1))