#973 Autofac versions updated to 3.1.5 in all the Better CMS modules; also removed other duplicating packages: Nlog, WindowsAzure.Storage, NHibernate.Logging, Newtonsoft.Json, Microsoft.AspNet.Razor, Microsoft.AspNet.Mvc, Iesi.Collections;
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev