Summary:
elm_calendar is not subject to current automated focus policies due to internal implementation issues.
(Each date in the calendar is an edje part. )
For the above reasons, I have implemented the focus policy support manually.
Test Plan: elementary_test - calendar sample.
Reviewers: bu5hm4n, woohyun
Subscribers: cedric, jpeg
Differential Revision: https://phab.enlightenment.org/D4421
Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>