Custom Validator

	We create two directives for custom validation.
1. integer.
	We use here the type="number" with min="0" and max="10". But the . and , are not allowed!
2. smart-float
	We want that the numbers with comma are valid. Therefore we can't use the html5 number type for it.
	the html5-browsers would not allow user to type what it would consider an invalid number, such as  1,2
{{size}} This is not valid integer! The value must be in range 0 to 10!
{{length}} This is not a valid float number!