this attribute the left menu (UserAccountMenu) can be managed based on the
selected user. The logged on user context (roles) finally determines if the
menu item shows up or not.
selectedUserContext attribute can contain "Administrator,Reseller,User"
Upgraded: Database scripts install_db.sql and upload_db.sql in order to support MSSQL2012
Upgraded: Installer to allow setup WebsitePanel with MSSQL2012
Added: MsSqlServer2012.cs