[usercase-webapi] Add 'No Record' and disable delete button when data is empty

- Add 'No Record' in record list when database is empty
- Change delete button to be disabled when database is empty

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 #550 from zhuyongyong/yongzhu/indexedDB/AddNoRecord

[usercase-webapi] Add 'No Record' and disable delete button