adding ArticleUtility and CategoryUtility classes as Thymeleaf Helper Classes..
Merge branch 'develop' of https://github.com/contento3/Projects into develop

Conflicts:
	core/src/main/java/com/contento3/cms/article/dao/ArticleDao.java
	core/src/main/java/com/contento3/cms/article/service/impl/ArticleServiceImpl.java