Fixed layout classes to reflect Foundation4 clasess
Fixed layout classes to reflect Foundation4 clasess

-changed the main and sidebar class functions to use Foundation 4's new grid class names

Signed-off-by: Jessica Biggs <99996b911567c83cce17cdf194f314975c57ddf1@simplefocus.com>

simplefocus/base2.6-wp,simplefocus/base2.6-wp,simplefocus/base2.6-wp,simplefocus/base2.6-wp