WorkElement V3.4.1

V3.4.1 implements some fixing on WorkElement : the dispatch of the work input in the ticket to be taken into account on total work for the project was not correct in some cases :
- when reducing work input, the diminution was not correctly taken into account
- when planning activity was not set previouly, and was set in the same time the work was increased, the increase was not correctly taken into account.
- when planning activity was not set previouly, and was set with existing work from another resource, the dispatch to the activity was wrong.