edje: add missing documentation.
Summary: This adds missing doxgen documentation for Edje_Common.h
Test Plan: API Doxygen Revision
Reviewers: cedric, jpeg, myoungwoon
Differential Revision: https://phab.enlightenment.org/D5345
Jean-Philippe Andre <jp.andre@samsung.com> | Oct 22 2017, 9:40 PM |