Continued:

Continued:
- some classes, interfaces, events and exceptions were not shop-specific and
  can be moved out to new project jproduct-core (same later with jshop-ee-lib).
- for example, jfiancials will not use shopping basket class but may only need
  product and category classes/interfaces. Then it is better to have these
  moved out to separate project.
- commons-codec is now referenced as library, not a single JAR
- jproduct-core added

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