Add support for multiple functions per field, add ADDRESS function

MultiTool.Common/Constants.vb

@@ -9,6 +9,7 @@
     Public Const FUNCTION_SQL = "SQL"
     Public Const FUNCTION_FIELD = "FIELD"
     Public Const FUNCTION_RUNNINGNUMBER = "RUNNINGNUMBER"
+    Public Const FUNCTION_ADDRESS = "ADDRESS"
 
     Public Const PLACEHOLDER_CONST = "CONST"
     Public Const PLACEHOLDER_FIELD = "FIELD"
@@ -65,6 +66,8 @@
         MissingValue
         AccountNotFound
         ArticleNotFound
+        PriceNotCalculated
+        MissingParameter
     End Enum
 
     Public Class FieldError