Display results from Piscal processing

Error handling for Piscal processing

Core/Utility/StringExtensions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using System.Text.RegularExpressions;
@@ -50,5 +51,10 @@ namespace LeafWeb.Core.Utility
 		{
 			return Regex.Replace(path, @".*/([^/]*$)", "$1");
 		}
+
+		public static string Join<T>(this IEnumerable<T> enumerable, string separator)
+		{
+			return string.Join(separator, enumerable);
+		}
 	}
 }