1. Don't allow JuK to shutdown until Phonon has definitely returned to StoppedState to prevent some backends
from crashing on shutdown.

2. Delay system tray creation until after the collection list has been loaded from the cache.  If we're
trying to create the system tray before this process then half the time we end up freezing all of Plasma
until the cache finally loads, which is especially noticable on initial KDE startup.

I will give this a few days of testing in /trunk and will then probably backport both.

svn path=/trunk/KDE/kdemultimedia/juk/; revision=921339