Significant changes to work with the new account/ledger structure. Removed much of the auto-generated model association code. Added helper functions into the models to perform model related work, such as model 'stats' (a bad name for a function to return a summary of pertinent financial information from a given model instance). There is a ton of cleanup to do, but first I want to get it all captured.

git-svn-id: file:///svn-source/pmgr/branches/ledger_transactions_20090605/site@81 97e9348a-65ac-dc4b-aefc-98561f571b83

views/helpers/format.php

@@ -13,7 +13,8 @@ class FormatHelper extends AppHelper {
 
   function currency($amount) {
     if (!isset($amount))
-      return null;
+      return '-';
+      //return null;
 
     return (isset($amount)
 	    ? self::$number->currency($amount)
@@ -34,7 +35,7 @@ class FormatHelper extends AppHelper {
   }
 
   function datetime($datetime) {
-    if (!$date) return null;
+    if (!$datetime) return null;
     return self::$time->nice($datetime);
   }