Log message

- Control: added default helper 'escapeUrl'
- TemplateHelpers: 'date' helper support both strftime() and date()

	Modify	/trunk/Nette/Application/Control.php	diff
	Modify	/trunk/Nette/Loaders/RobotLoader.php	diff
	Modify	/trunk/Nette/Templates/Filters/TemplateHelpers.php	diff