Added fields injection for the delegate instance loaded when handling signals

The delegate instance used when handling a signal could be different than the one used when the execution has been handled (like a new instance), so there is the need to re-inject fields expressions otherwise they could be not accessible by the instance handling the signal
ACT-1625: not warning found DI for artifacts (textannotation, assoc)
Merge pull request #131 from lukakama/patch-1

Added fields injection for the delegate instance loaded when handling si...
Merge remote-tracking branch 'upstream/master'