#80 Correction of the valdiation on CostCenter

1. Correction of the validation on CostCenter
2. Correction of the form title in costCenter
3. Add feedback messages on CostCenterController
4. Correction of the validation on Manufacturer
5. Correction of the form title on Manufacturer
6. Add feedback messages on ManufacturerController
7. Removed the duplicated html on form titles
8. And other small corrections on the forms and lists