ProjectInfo.php:
- Only read project record once
- Simplified code when calling data.addRows a little
DBInterface.php:
- Updated readProjectChartEmployees() to compute "Other Costs" along
with all the employee costs.  Also use SQL parameter instead of string
concatenation.
- Updated readProjectChartDepartments() to compute "Other Costs" along
with all the department costs.  Also use SQL parameter instead of string
concatenation.
- Removed readProjectChartOther() as it isn't used any more