- Tuned the blog updating logic:
    Updating your own blog entry will demote it (if promoted),
    and will queue it in the moderation queue for promotion.
    If a node administrator updates his own blog entry through
    the blog update mechanism that regular users use, then he
    will be treated as a regular user and his blog entry will
    be demoted.  But when an administrator updates blog entries
    through the admin pages, they will not be changed unless
    explicitly specified.