Do not allow nickserv/ungroup to bypass ns_maxemail, and allow opers to bypass ns_maxemail

data/nickserv.example.conf

@@ -640,7 +640,7 @@ command { service = "NickServ"; name = "UPDATE"; command = "nickserv/update"; }
  * Limits how many times the same email address may be used in Anope
  * to register accounts.
  */
-module
+#module
 {
 	name = "ns_maxemail"
 
@@ -649,5 +649,5 @@ module
 	 * commented, there will be no limit enforced when registering new accounts or using
 	 * /msg NickServ SET EMAIL.
 	 */
-	#maxemails = 1
+	maxemails = 1
 }