[ivi-tct][webapi] Update license to DSB from LICENSE 2.0

- Two files which with Intel author are under LICENSE 2.0, one need update to DSB,
  another(FileSystemManager_addStorageStateChangeListener.html)'s author is Samsung, Intel is updater.
Merge pull request #1518 from haoxli/tct/update-license

[ivi-tct][webapi] Update license to DSB from LICENSE 2.0
[webapi][XWALK-3189] Remove 2 cases for CSP

- Due to these 2 case need be written, so remove firstly.

Impacted TCs num: New 0, Update 0, Delete 2
Unit test Platform: [Tizen-IVI]
Unit test result summary: Pass 0, Fail 0, Blocked 0
[ivi-tct][XWALK-3204] Delete the duplicated case ID

- Delete the duplicated case ID background-002.
[ivi-tct] Format tests.xml and tests.full.xml

- Format tests.xml by "xmllint --format tests.xml"
- Format tests.full.xml by "xmllint --format tests.full.xml"
Merge pull request #1523 from JianfengXu/tct/csp/3189

[webapi][XWALK-3189] Remove 2 cases for CSP
Merge pull request #1522 from chenxix/webapi/modify-background-ivi-tct

[ivi-tct][XWALK-3204] Delete the duplicated case ID
[ivi-tct][webapi][xwalk-3179] Revise timeout to 5000 from 500

- Change timeout to 5000, too short timeout will make test fail

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 1, fail 0, block 0
Merge pull request #1527 from haoxli/tct/webapi/xwalk-3179-2

[ivi-tct][webapi][xwalk-3179] Revise timeout to 5000 from 500