Improvements to Apache2 installation.

Squashed commit of the following:

commit 0befe40cd5eea87c82806117a350f76e3fdbc0a3
Author: Lee Hambley <lee.hambley@gmail.com>
Date:   Tue Jun 11 15:59:19 2013 +0200

    Apache2 with fewer boot time hacks

commit c87e00ec3b90d2d69740f4e2989020275a3f3516
Author: Lee Hambley <lee.hambley@gmail.com>
Date:   Tue Jun 11 15:26:36 2013 +0200

    Allow Apache2-Prefork-Dev to be installed without starting via apt

commit 4f2b935c6a7ea8ac4a04ce0cd095f071f9ff579a
Author: Lee Hambley <lee.hambley@gmail.com>
Date:   Tue Jun 11 15:15:05 2013 +0200

    Remove a bunch of really ill thought out Apache2 control code