E aí Leonardo.
Tá dando esse erro aqui, na console do Chrome:
Uncaught TypeError: this.jqEl.datepicker is not a function
at c.init (components.js.xhtml?ln=primefaces&v=6.0:5)
at c.e.(anonymous function) [as init] (http://localhost:8080/alunos/javax.faces.resource/core.js.xhtml?ln=primefaces&v=6.0:5:335)
at new c (core.js.xhtml?ln=primefaces&v=6.0:5)
at Object.createWidget (core.js.xhtml?ln=primefaces&v=6.0:1)
at Object.cw (core.js.xhtml?ln=primefaces&v=6.0:1)
at HTMLDocument.<anonymous> (cadAlunos.xhtml:49)
at i (jquery.js.xhtml?ln=primefaces&v=6.0:25)
at Object.fireWith [as resolveWith] (jquery.js.xhtml?ln=primefaces&v=6.0:25)
at Function.ready (jquery.js.xhtml?ln=primefaces&v=6.0:25)
at HTMLDocument.bY (jquery.js.xhtml?ln=primefaces&v=6.0:25)