- added some index files

- fixed some bugs from sourceforge:
	- sorting invoices for header fields
	- ...

www/index.tcl

+ad_page_contract {
+    Empty redirection index.tcl file
+} {
+
+}
+
+ad_returnredirect "/intranet/"
+

www/list.tcl

@@ -205,9 +205,9 @@ switch $order_by {
     "Preview" { set order_by_clause "order by invoice_nr" }
     "Provider" { set order_by_clause "order by provider_name" }
     "Customer" { set order_by_clause "order by customer_name" }
-    "Due Date" { set order_by_clause "order by (ci.effective_date + ci.payment_days)" }
-    "Amount" { set order_by_clause "order by ii.invoice_amount" }
-    "Paid" { set order_by_clause "order by pa.payment_amount" }
+    "Due Date" { set order_by_clause "order by (ci.effective_date)" }
+    "Amount" { set order_by_clause "order by ci.amount" }
+    "Paid" { set order_by_clause "order by ci.paid_amount" }
     "Status" { set order_by_clause "order by cost_status_id" }
     "Type" { set order_by_clause "order by cost_type" }
 }