Fix doubled tags on reload (#277)

templates/global_settings.html

@@ -199,6 +199,7 @@ Global Settings
 
         // Load DNS server to the form
         {{range .globalSettings.DNSServers}}
+        $("#dns_servers").removeTag('{{.}}');
         $("#dns_servers").addTag('{{.}}');
         {{end}}
 

templates/server.html

@@ -165,6 +165,7 @@ Wireguard Server Settings
 
         // Load server addresses to the form
         {{range .serverInterface.Addresses}}
+        $("#addresses").removeTag('{{.}}');
         $("#addresses").addTag('{{.}}');
         {{end}}