Bug 293208: fix errors creating default resources on initialisation

Wait for Akonadi server to be fully running before creating default
KAlarm resources. This also requires kdepimlibs commit
d612b6055f725c01664e3ed07294d2f29052d204 by Volker Krause which fixes
the server manager reporting prematurely that it is running.

Backport of ce1caef4 (master)

BUG:293208
FIXED-IN:4.8.1