[Move Elements] Allow force move of elements even if validation fails

When elements are moved via the transfer view, a validation checks if incoming/outgoing references to the moved elements are still valid. The purpose of that is to see if an element in a project can reference an element in a library. The rule however also reports problems that have nothing to do with the element being in a library or not, e.g. If Class A has a Property b of type C, and C isn't primitive, an error is reported. Users will still want to move the element in spite of that error. To allow that, the errors must be shown in a dialog and the user has the final say on whether the move should be canceled or not.

🆔 ECLIPSE-555050 / POLARSYS-2360 👷 felix.dorner 📅 2019-01-29 🔎 1.3.0

cp-api / cp-lib4

[Move Elements] Allow force move of elements even if validation fails #24