Merge pull request #84 from efraimgentil/master

Fix #76: Correction of the duplicated title in the equipamentModel form
#80 Correction of validation on CostCenter, also add feedback messages on the CostCenterController actions, Correction of validation on Manufacturer, and correct the form title, add the feedback messages on ManufacturerController actions
Merge remote-tracking branch 'upstream/master'