Lock Cause is not Saved to Database for Stockunits

[Akjo4712]

@wms2: Somehow comments made in the Client are not saved for Stockunits in dev/los-ejb/src/main/java/de/linogistix/los/inventory/crud/StockUnitCRUDBean.java. Mirrored behaviour from default implementation in dev/los-ejb/src/main/java/de/linogistix/los/crud/BusinessObjectCRUDBean.java. This might not be the most elegant Solution, but it works.

[Akjo4712]

Be aware, I didn't build and Test my proposed change. My change is straight forward and should work, but to be sure you should build and test if Lock Cause is saved as comment when locking a Stockunit via Client. As my Version has some other adoptions I am currently unable to merge this cleanly.