DeliveryNote: Add option to redact modifier value

Elwig/Models/Entities/Modifier.cs

@@ -16,6 +16,9 @@ namespace Elwig.Models.Entities {
         [Column("active")]
         public bool IsActive { get; set; }
 
+        [Column("redacted")]
+        public bool IsRedacted { get; set; }
+
         [Column("ordering")]
         public int Ordering { get; set; }
 
@@ -46,6 +49,8 @@ namespace Elwig.Models.Entities {
             (Rel != null) ? $"{Utils.GetSign(Rel.Value)}{(Math.Abs(Rel.Value) < 0.1m ? "\u2007" : "")}{Math.Abs(Rel.Value):0.00##\u00a0%}" :
             "";
 
+        public string? PublicValueStr => IsRedacted ? null : ValueStr;
+
         public override string ToString() {
             return Name;
         }