Don't cherry-pick:

Don't cherry-pick:
- updated persistence.xml with new entities (bonus cards and such)
- added (not done with with this commit) new project dependencies, like
  juser-activity-lib, jcustomer-core and jcustomer-lib
- implemented protected methodsfor creating managed instances of Product
- receipt items now reference an "item manufacturer" which is a BasicData
  instance
- discounts may be added multiple times, so never consider them as being added
- ignore more string for internationalization
- changed copyright to Free Software Foundation

Signed-off-by: Roland Häder <roland@mxchange.org>