capitalise bounty voucher type

BGS/Vouchers.cs

@@ -1,12 +1,10 @@
-using System;
+using System.Linq;
-using System.Collections.Generic;
+using System.Globalization;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using NonaBGS.Journal;
 
 namespace NonaBGS.BGS {
     public class Vouchers : LogEntry {
+        private string type = null;
 
         public int TotalSum {
             get {
@@ -19,21 +17,21 @@ namespace NonaBGS.BGS {
 
         public string Type {
             get {
-                string v = Entries
+                if (type == null) {
-                             .Where(x => x.GetType() == typeof(RedeemVoucherEntry))
+                    string v = Entries
-                             .GroupBy(x => (x as RedeemVoucherEntry).Type)
+                                 .Where(x => x.GetType() == typeof(RedeemVoucherEntry))
-                             .Select(x => x.Key)
+                                 .GroupBy(x => (x as RedeemVoucherEntry).Type)
-                             .First();
+                                 .Select(x => x.Key)
-                return v;
+                                 .First();
+                    type = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(v);
+                }
+
+                return type;
             }
         }
 
         public override string ToString() {
-            StringBuilder builder = new StringBuilder();
+            return string.Format("{0} Vouchers: {1}", Type, Credits.FormatCredits(TotalSum));
-
-            builder.AppendFormat("{0} Vouchers: {1}", Type, Credits.FormatCredits(TotalSum));
-
-            return builder.ToString();
         }
 
         /// <summary>