Fixed web app can't update.

Fixed web app can't update.

[Issue#] N/A
[Problem] can't update
[Cause] widget preference db has tizen_appid instead of app_id(handle).
So db error occur during update.
db error is "foreign key constraint failed".
[Solution] modify foreign key from tizen_appid to app_id.
[SCMRequest] N/A

Change-Id: I7299fd34f125e574eeeeffb111ac022b08e3987b