[usecase-webapi] improve ResourceTime w3c usecase

- Show image after loading it
- Use li to format the information

Impacted tests(designed|approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 1, fail 0, block 0
Merge pull request #587 from zhuyongyong/yongzhu/usecase-webapi/resourceTime

[usecase-webapi] Improve ResourceTime w3c usecase