Following things are changed: (in order of class names)

Following things are changed: (in order of class names)
- Exception "NoShippingCompanyOwnedException" added which will be thrown when
  the current user does not own or participate in any shipping company.
- Factory method for ShippingCompany class rewritten to check above exception
  conditions. The class has some stubs and a lot old methods which needs be
  updated/rewritten/obsoleted.
- Cast removed from older exception and re-added as type-hint
- Wrapper class added for "company" table.
- Minor improvements to some classes
- Block for personal data added (the login area will now have another stub
  message) which is being generated by a generic WebBlockHelper class
- The DataSetCriteria class now returns the primary key (column name) or if
  not set the unique key (column name again).
- All wrappers are now initialized (cache instance) by BaseDatabaseWrapper ...
- ... and must set the table name in factory method.
- The method doSelectByCriteria() is now generic written and resists in class
  BaseDatabaseWrapper
- New helper class "WebLinkHelper" added
- Helper classes rewritten so we have more generic methods (code reduced)
- New helper class "WebBlockHelper" added
- User and Guest class are now extending BaseUser class
- Method doFilterFormatTimestamp() now resists in BaseFrameworkSystem class