Xtazy: fixed licenses in xtazy.{cpp,h}.
Poleemery: added the personal finances manager stubs.
PY: added OperationsTab.
PY: implement IHaveTabs.
PY: AccountsTab stubs.
PY: storage stubs.
PY: added ORAL - Object-Relational Autogeneration Language.

This stuff will later be moved to a separate lib.
PY: more oral work.