[Tizen][Runtime] Always use [tizen_app_id] on tizen.

For xpk, [tizen_app_id] = xwalk.[GenerateId or GenerateIdForPath]
For wgt, [tizen_app_id] = Get from config.xml
Merge pull request #2261 from CooderIan/sort_out_id

[Tizen][Runtime] Always use [tizen_app_id] on tizen.