material properties DAO refactoring

Preparation phase:
1. MaterialDAO should be fetched from AbstractBusinessObject. Currently AbstractBusinessObject just calls IDAOFactory.getMaterialDAO, but in future it can decorate the DAO and fill material properties on the fly. This refactoring required moving some methods from Managers to Business Objects.
2. MaterialDAO should expose FROM and WHERE clauses of its selects - they will be used to fetch only required properties.

SVN: 2513