Changes to allow .less files created, edited and deleted in the Custom files folder.
Main developers can decide if they want this to be allowed in the scripts folder.
Fixed the assembly reference issue.
Module installation improvements.

Fix the issue of installing/uninstalling module may delete the system dll which will bread down the Kooboo CMS system.
Make as an obsolete class.
#181
Update README.md
Merge pull request #183 from ZhiGuang/master

#181
Merge pull request #177 from ADARTA/less

Changes to allow .less files created, edited and deleted.
?
Merge branch 'master' into customized

Conflicts:
	Kooboo.CMS/Kooboo.CMS.SitesProviders/Kooboo.CMS.Sites.Persistence.EntityFramework/Kooboo.CMS.Sites.Persistence.EntityFramework.csproj
	Kooboo.CMS/Kooboo.CMS.SitesProviders/Kooboo.CMS.Sites.Providers.AzureTable/Kooboo.CMS.Sites.Providers.AzureTable.csproj
	Kooboo.CMS/Kooboo.CMS.SitesProviders/Kooboo.CMS.Sites.Providers.SqlServer/Kooboo.CMS.Sites.Providers.SqlServer.csproj
	Kooboo.CMS/Kooboo.CMS.Web/Kooboo.CMS.Web.csproj
	README.md