رسمی ساختن صفحه ی 404 سفارشی - Custom 404 Page by Siropu 1.2.1

Added admin option "Enable 404 error log".
Added new field "Bot name" and search for it.
Added separate search fields for "URL" and "Redirect URL".
Made improvements on how search works withing the active tabs and added a new global "Any" when searching.
Added admin options shortcut in the 404 not found list page.