fixed #6515
fixed #6515

menubar unit test added.
tests;
+style&styleClass
+autoDisplay&baseZIndex&autoZIndex
+functions
+functions with autoDisplay false
+routerItems
+(item)icon&disabled&style&styleClass

primefaces/primeng,WebRota/primeng,aaraggornn/primeng,aaraggornn/primeng,sourabh8003/ultimate-primeNg,carlosearaujo/primeng,WebRota/primeng,primefaces/primeng,carlosearaujo/primeng,sourabh8003/ultimate-primeNg,aaraggornn/primeng,carlosearaujo/primeng,primefaces/primeng,sourabh8003/ultimate-primeNg,WebRota/primeng,aaraggornn/primeng,sourabh8003/ultimate-primeNg,carlosearaujo/primeng,primefaces/primeng,WebRota/primeng