Fabrik/fabrik — pull request #767 by Sophist-UK (2013-06-27 21:11:04+00:00)
Title: Hide symptoms of unset placeholders in data[0]

Missing placeholders when Merge Rows and Reduce Data were causing php
warnings to appear e.g.

Notice: Undefined property: stdClass::$fch_cat___id
in/homepages/3/d85014684/htdocs/fairmile/dev/joomla3/components/com_fabrik/models/list.php
on line 9455

This fix checks that the property exists as well as providing some
optimised property lookups.

But I am unsure whether we should hide these symptoms of a more deep rooted problem.