Handle "This page is pending deletion" error page

I've not seen this one before, but picked it up in testing today, so handle it as submission deleted

lib/faexport/scraper.rb

@@ -1391,8 +1391,8 @@ def check_errors(html, url)
     end
 
     # Handle "system message" type errors
-    maintable_head = html.at_css("table.maintable td.cat b")
-    if !maintable_head.nil? && maintable_head.content == "System Message"
+    maintable_head = p html.at_css("table.maintable td.cat")
+    if !maintable_head.nil? && (p maintable_head.content.strip) == "System Message"
       maintable_content = html.at_css("table.maintable td.alt1").content
       # Handle disabled accounts
       if maintable_content.include?("has voluntarily disabled access to their account and all of its contents.")
@@ -1410,6 +1410,11 @@ def check_errors(html, url)
       if maintable_content.include?("You are not allowed to view this image due to the content filter settings.")
         raise FAContentFilterError.new(url)
       end
+
+      # Handle page is pending deletion
+      if maintable_content.include?("The page you are trying to reach is currently pending deletion")
+        raise FANotFoundError.new(url)
+      end
     end
   end
 

lib/faexport/views/docs.md

@@ -35,8 +35,8 @@ authentication cookies, and can be used to gain access to your account.
 ## Errors and status codes
 
 In the case of an error, the response will be returned as json with an `error_type` field giving an error type you can
-match against in your code, an `error` field giving details of what happened and a `url` field that includes any FA url
-that the error originated from.
+match against in your code, an `error` field giving details of what happened and, optionally, a `url` field that
+includes any FA url that the error originated from.
 
 ~~~json
 {