[webapi] Integrate 20 tests for CSS3 Flexible Box

- approved 11
- 9 upstream cases have been integrated before

Impacted tests(approved): new 11, update 0, delete 0
Unit test platform: [android] crosswalk-10.38.222
Unit test result summary: pass 11, fail 0, block 0
[webapi] Integrate 11 tests for W3C Device Orientation Event

- approved: 11

Impacted tests(approved): new 11, update 0, delete 0
Unit test platform: [android] crosswalk-10.38.222
Unit test result summary: pass 11, fail 0, block 0
[webapi] Integrate 259 tests for IndexedDB

 - designed: 1, approved: 258
 - about 9 tests have been deleted

Impacted tests(approved): new 256, update 2, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 258, fail 0, block 0
Merge pull request #1175 from xinliux/flexiblebox-integrate

[webapi] Integrate 20 tests for CSS3 Flexible Box
Merge pull request #1176 from xinliux/deviceorientation-integrate

[webapi] Integrate 11 tests for W3C Device Orientation Event
Merge pull request #1177 from yunxiaoxie/move-indexeddb

[webapi] Integrate 259 tests for IndexedDB
[webapi] Integrated 42 tests for HTML5 Session History

- approved: 42

Impacted tests(approved): new 42, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 42, fail 0, block 0
[webapi] Integrate 57 tests for XmlHttpRequest

 - designed: 10, approved: 47

Impacted tests(approved): new 47, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 47, fail 0, block 0
[webapi] Integrate 43 test for DOM/JS related enhancements in HTML5

- approved: 43

Impacted tests(approved): new 43, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 43, fail 0, block 0
[webapi][XWALK-2478] Rename Vehicle Info test suite because it will be implemented by Tizen IVI

Unit test platform: Tizen IVI
Unit test result summary: Pass:15, Fail:14, Block:0

This closes #1158 and resolves #1181.
[webapi] Integrate 11 tests for HTML5 AppCache

- approved: 11

Impacted tests(approved): new 11, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 11, fail 0, block 0
Merge pull request #1180 from xinliux/sessionhistory-integrate

[webapi] Integrated 42 tests for HTML5 Session History
Merge pull request #1183 from yunxiaoxie/move-httprequest

[webapi] Integrate 57 tests for XmlHttpRequest
[webapi] Integrate 1 test for FileSystem-tizen

Impacted tests(approved): new 1, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 1, fail 0, block 0
Merge pull request #1182 from xinliux/jsenhance-integrate

[webapi] Integrate 43 test for DOM/JS related enhancements in HTML5
Merge pull request #1184 from xinliux/appcache-integrate

[webapi] Integrate 11 tests for HTML5 AppCache
Merge pull request #1185 from yunxiaoxie/move-filesystem-tizen

[webapi] Integrate 1 test for FileSystem-tizen
[webapi]Update reference files for CSS3 Color tests to reflect the latest W3C repo

Impacted tests(approved):new 0,update 2,delete 0
Unit test platform:[android]
Unit test result summary:pass 2,fail 0,block 0
[webapi]Update reference files for CSS3 Style tests to reflect latest W3C repo

Impacted tests(approved):new 0,update 6,delete 0
Unit test platform:[android]
Unit test result summary:pass 6,fail 0,block 0
[webapi] Integrate 27 tests for HTML5 iframe.sandbox

- approved: 26
- One case have been removed ever.

Impacted tests(approved): new 26, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 26, fail 0, block 0