make homepage threads date display based on the thread creation date rather than bump date

1. because its only updated per hour, bump date is almost useless
2. hot threads are only for past 7 days so it it a better way to tell most replied vs most recent

views/pages/home.pug

@@ -49,8 +49,8 @@ block content
 								if !post.nomarkup && !post.subject
 									| >>>/#{post.board}/#{post.postId}
 						td
-							- const bumpDate = new Date(post.bumped);
-							time.right.reltime(datetime=bumpDate.toISOString()) #{bumpDate.toLocaleString(undefined, {hourCycle:'h23'})}
+							- const postedDate = new Date(post.date);
+							time.right.reltime(datetime=postedDate.toISOString()) #{postedDate.toLocaleString(undefined, {hourCycle:'h23'})}
 	if boards && boards.length > 0
 		+boardtable(true, false)
 			each board in boards