TableField: rename validate to getValidationResult

In a change in scout.FormField, the method validate was renamed to
getValidationResult (commit 26a0870, 2017-06-01). TableField was then
not refactored.

Change-Id: I1a8eb9291041a9d28b7547b0f6bd4542bd40f94a
Signed-off-by: Samuel Keusch <samuel.keusch@bsi-software.com>
Reviewed-on: https://git.eclipse.org/r/128444
Reviewed-by: Andre Wegmueller <awe@bsiag.com>
Tested-by: Andre Wegmueller <awe@bsiag.com>
diff --git a/org.eclipse.scout.rt.ui.html/src/main/js/scout/form/fields/tablefield/TableField.js b/org.eclipse.scout.rt.ui.html/src/main/js/scout/form/fields/tablefield/TableField.js
index 1ee5c53..02ee487 100644
--- a/org.eclipse.scout.rt.ui.html/src/main/js/scout/form/fields/tablefield/TableField.js
+++ b/org.eclipse.scout.rt.ui.html/src/main/js/scout/form/fields/tablefield/TableField.js
@@ -154,8 +154,8 @@
   this._checkedRows = scout.objects.createMap();
 };
 
-scout.TableField.prototype.validate = function() {
-  var desc = scout.TableField.parent.prototype.validate.call(this);
+scout.TableField.prototype.getValidationResult = function() {
+  var desc = scout.TableField.parent.prototype.getValidationResult.call(this);
   if (desc && !desc.valid) {
     return desc;
   }