Make the post moderation center obey max posts

Signed-off-by: emanuele <emanuele45@gmail.com>
Globalized options and modSettings - Thanks Norv for the report

Signed-off-by: emanuele <emanuele45@gmail.com>
While working on it, let's move out of the query also the start

Signed-off-by: emanuele <emanuele45@gmail.com>
Merge pull request #427 from emanuele45/yoshi_postmoderationfix

Yoshi postmoderationfix