single quote removed from column names.
Status column added in Article table,Exception handled when creating new site, Message provided when user try to access unpublished sites, Article model, dao and service code modified for published/unpublished status.
MetaTag model class added.
Merge branch 'develop' of https://github.com/contento3/Projects into develop

Conflicts:
	core/src/main/java/com/contento3/cms/article/dao/impl/ArticleDaoHibernateImpl.java
Commit after merged conflicts.