Add a warning message for passive claims with incoming and passive releases with outgoing dependencies
Relates to #38 (closed). When a passive claim has an incoming dependency it can cause actions - that are specified after a passive claim in another activity - to be scheduled later than expected. The same applies for passive releases that have outgoing dependencies. A warning message should be added to inform the user that passive claims should not contain incoming dependencies and a syncbar should be used instead. This warning - yet tailored - should also be added for the releases.