row custom renderer [0.7.0]

This version introduces multiple enhancements:

added possibility to give custom row renderer

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

Modified:   Lib/Core/Render/View/Grid/GridAbstract.php
            -- Added --
                DEFAULT_RENDERER
                $_customRowRenderer to store renderer class name
                serRowRenderer
                getRowRenderer
            -- Updated --
                render check that custom renderer weas given

Modified:   Lib/Core/Render/etc/config.ini
            -- Modified --
                changed version from 0.6.2 to 0.7.0