D-pad navigation for Quic access view

D-pad navigation for Quic access view

[Issue]    https://bugs.tizen.org/jira/browse/TT-183
[Problem]  There was no support for D-pad navigation in Quick Access.
[Cause]    Some elements seemed not to be allowed to be focused.
[Solution] Added buttons which enables to focus tiles in Quick Access.
[Verify]   Launch browser > Open few web pages > open Quick Access
           view, try to navigate using D-pad.

Change-Id: Ie0e5b661a8502d551539e9d89e59162d554eb044
Signed-off-by: Maciej Skrzypkowski <m.skrzypkows@samsung.com>