D-Net

- Added a getRequestForUser method
- added funding info in request
- made a human friendly id for requests
- merged issn and eissn in journals

Minor bug fixes

added invoice handling code

loading affiliations for publications

- Saving publications
- Changed journal and publisher save to update or insert

- Throwing Exceptions in doi resolution
- First implementation of save and get in publication dao

added type and identifiers of resolved publication

minor fixes in doi resolving

resolving dois

Fixed a bug in update user