gengrid: extends D2418 to horizontal mode.
gengrid: extends D2418 to horizontal mode.

Summary:
do not return yet in case of edge items if looping
is disabled. try to select/focus last item.

Signed-off-by: Jyotiprakash Sahoo <jp.sahoo@samsung.com>

@fix

Test Plan: elementary_test -> Gengrid 2

Reviewers: raster, singh.amitesh, cedric, SanghyeonLee

Reviewed By: SanghyeonLee

Differential Revision: https://phab.enlightenment.org/D2865

rvandegrift/elementary,rvandegrift/elementary,rvandegrift/elementary,rvandegrift/elementary