Test for overruling `Asset.timestamp` when generating css URLs.
Test for overruling `Asset.timestamp` when generating css URLs.

CakeDC/cakephp,mvdriel/cakephp,garethellis36/cakephp,garethellis36/cakephp,CakeDC/cakephp,cakephp/cakephp,mvdriel/cakephp,tenkoma/cakephp,dakota/cakephp,petteyg/cakephp,dakota/cakephp,tenkoma/cakephp,cakephp/cakephp,CakeDC/cakephp,ADmad/cakephp,ndm2/cakephp,CakeDC/cakephp,davidyell/cakephp,ADmad/cakephp,davidyell/cakephp,ndm2/cakephp,petteyg/cakephp,tenkoma/cakephp,ndm2/cakephp,garethellis36/cakephp,petteyg/cakephp,ADmad/cakephp,mvdriel/cakephp,petteyg/cakephp,ADmad/cakephp,garethellis36/cakephp,dakota/cakephp,mvdriel/cakephp,ndm2/cakephp,tenkoma/cakephp,cakephp/cakephp,davidyell/cakephp,dakota/cakephp,cakephp/cakephp