[demo-express] Add 4 samples to demo express.

- Fail Reason: XWALK-2401, XWALK-2100, SSO: clearDB method error.

Impacted TCs num(approved): New4, Update 0, Delete 0
Unit test Platform: [Tizen-IVI]
Unit test result summary: Pass 3, Fail 1, Blocked 0
demonstrates