corrigindo pagina de comentário e criada a classe de constantes.
Merge branch 'master' of https://github.com/chagasmjl/dreams2note

Conflicts:

	dreams2note-web/src/main/java/com/dream2note/controller/ComentarioMB.java
	dreams2note-web/src/main/java/com/dream2note/controller/UsuarioMB.java

	dreams2note-web/src/main/java/com/dreams2note/util/SalvaArquivoHelper.java
	dreams2note-web/src/main/webapp/pages/protected/user/comentario.xhtml