Prototype feature renaming on automation chains.

User can rename an operation chain. It updates event handlers, user actions and web services filtering, as well as "Step" (present in CMF profile).
There is also an impact on run chain and createTask operations. The way I suggest to do is to list all the opreations whose parameters contains the string equivalent to the name that is changed. And the user can easily manually change the value. Note that all the operations should be lookup, as the operation name could be found in a "SetVariable" operation, for instance.