Add 'Mark as unread' link for each post

[ntrel]

On mobile it seems there's no way to mark a post as unread (as the virtual keyboard only appears when editing text). There could be a link under 'Reply' on the right. This would extend the height of the post header box, so maybe also add a 'More...' button and put the less common things like 'Flag' and 'Source' under that.