some efm work:  - up/down key navigation for grid mode - fixed next/prev functions for custom grid - use 'key' instead of keyname
some efm work: 
- up/down key navigation for grid mode
- fixed next/prev functions for custom grid
- use 'key' instead of keyname


SVN revision: 39514

FlorentRevest/Enlightenment,tasn/enlightenment,FlorentRevest/Enlightenment,rvandegrift/e,rvandegrift/e,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e