CABINET: support for created_by_uid for Publication, Authorship & Thanks

- Added support for created_by_uid column in DB. Property added
  also to Publication, Authorship and Thanks objects.
- Updated Auditparser and RPC.
- When creating object, store also created_by_uid and if present, use it
  to resolve privileges when deleting object.
GUI: support for created_by_uid in GUI

- Privileges above Publications now handles created_by_uid
- Small code changes.
GUI: slightly updated add publication wizard

- Updated texts on addPublication wizard page 1.
Merge pull request #147 from zlamalp/pubs

CABINET: support for created_by_uid in publications