add more hooks (still incomplete)

doc/README.Hooks

@@ -59,6 +59,22 @@ AddDocument::preIndexDocument
   are the document and the indexed document. Returning false will prevent
   the document from being indexed.
 
+EditDocument::editDocumentAttribute
+  Called for each custom document attribute
+
+  This hook will be called for each custom attribute to ouput the form entry.
+  The parameters passed are the document and the attribute definition.
+  Returning an empty array will prevent the attribute from being show.
+  Returning an array with two elements will pass those element to the formField
+  method. A returned string will be output as is.
+
+EditDocument::addDocumentAttributes
+  Called after all custom document attributes has been output
+
+  This hook will be called right after the document attributes have been shown.
+	The return value is either an array with two elements or a string.
+	The string will be output as is, the array will be passed to the method formField.
+
 UpdateDocument::preUpdateDocument
   Called before a new document will be updated
 
@@ -70,10 +86,10 @@ UpdateDocument::preUpdateDocument
 UpdateDocument::updateDocument
   Called when the document is to be updated
 
-	This hook can be used to replace the code for updating a document. In
-	that case it must return a document content or false. If
-	the hook returns null, the original code for adding the
-	document will be executed.
+  This hook can be used to replace the code for updating a document. In
+  that case it must return a document content or false. If
+  the hook returns null, the original code for adding the
+  document will be executed.
 
 UpdateDocument::postUpdateDocument
   Called after a new document has been updated