external template render (fix) [0.5.3]

This version introduces multiple enhancements:

fixed joining external templates into main template

Details of additions/deletions below:
--------------------------------------------------------------

Modified:   /Lib/Core/Render/View/Abstract.php
            -- Updated --
                _external, read current main template inside foreach

Modified:   /Lib/Core/Render/etc/config.ini
            -- Modified --
                changed version from 0.5.2 to 0.5.3