[Tizen] Use Tizen application database to store application data

Crosswalk should use the Tizen platform's application database
to store application data, instead of its own. This reduces
duplication of information and allows webapps to be behave
more like native apps in the eyes of the system.

BUG=XWALK-2029
Merge pull request #2235 from pozdnyakov/Use_Tizen_app_DB

[Tizen] Use Tizen application database to store application data