urlencoded filter values

[apmuthu]

When we use the defineAllowableValues method to provided for a drop down select box for any filter field that has spaces in it's potential values, the said field displays a blank in the table listing.
This may be rectified by urldecode of the filter value before usage at line 1302 by changing:

$filter_value = $_REQUEST[$field];

to be:

$filter_value = urldecode($_REQUEST[$field]);

[apmuthu]

The fix in my last commit is the actually correct one.
The line 1685 in this ajaxCRUD.class.php:

$list_val = $list[0];

should become:

$list_val = urldecode($list[0]); // manual urldecode as no js here

In general, the js files manage the urldecode but for the form (add record), it needs to be in php here.