Make load unlinked bouquets configurable
We induce a feature months ago that loaded "unlinked" userbouquets. This
means that userbouquets that are not in bouquets.tv and bouquets.radio
are also loaded into the service list on top of it. This was intended
when you install settings and have your own added userbouquets that those
own added userbouquets are still loaded after an upgrade via opkg of the
installed settings. This is some kind of intelligent algorythm. It also
helps you to clean userbouquets that are unlinked and left behind as they
are added in the list you were able to remove then (ghost bouquets)
But some users do not understand/like this issue. So for now I make it
configurable and you are able to disable this feature.