Fix the issue that javascript is not resumed after resume ewk_view

Fix the issue that javascript is not resumed after resume ewk_view

[Title] Fix the issue that javascript is not resumed after resume ewk_view
[Issue#] N/A
[Problem] Javascript is not resumed after resume ewk_view
[Cause] Multiple suspend/resume ActiveDOMObject are not working correctly.
        (REGRESSION:https://review.tizenrsa.org/#/c/74281/)
[Solution] Revert the code(https://review.tizenrsa.org/#/c/74281/) and
            add calls to suspend/resumeAnimations in ewk_suspend/resume_view.

Change-Id: I007c5aa13a28c485d8447e85150c40747124bf39