Fixed content type new field item sorting issue.
#249
Change the Label entity primary key to UUID because the error:
 Operation failed. The index entry of length 982 bytes for the index 'PK_dbo.Kooboo_CMS_Sites_Labels' exceeds the maximum length of 900 bytes.
Fixed the site initialization with sub sites issue.
Fixed URL redirect value issue when moving page with create URL redirect option.
Merge branch '4.3'
Show the count of embedded folder content.
New URL redirect management feature.#248