[webapi] Integrate WebCL conformance tests from Khronos

Impacted TCs num(designed): New 133, Update 0, Delete 0
Unit test Platform: [Andriod]
Unit test result summary: Pass 0, Fail 0, Blocked 0
Update xwalk command in desc

 -open_app to app_launcher -s
 -ail_list to app_launcher -l
[wrt]Add setting:context-menu to usecase

[Detailed commit message (if have)]
Impacted TCs num(approved):New 1,Update 0,Delete 0
UT result: Do UT after image is ok
[webapi] Change designed tests to approved for XmlHttpRequest

Impacted tests(approved): new 10, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 2, fail 8, block 0
Merge pull request #1234 from yunxiaoxie/status-xmlhttprequest

[webapi] Change designed tests to approved for XmlHttpRequest
[webapi] Change designed test to approved for IndexedDB

Impacted tests(approved): new 1, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
Merge pull request #1235 from yunxiaoxie/status-indexeddb

[webapi] Change designed test to approved for IndexedDB
Merge pull request #1232 from Honry/update-command-in-desc

Update xwalk command in desc
[embedding][XWALK-2763] Add test cases for EmbeddingApi

- Add 2 cases for XWalkView.getRemoteDebuggingUrl
- Add 1 case for XWalkResourceClient.onReceivedSslError
- Failure analysis: the remoteDebuggingUrl returned is null

Impacted tests(approved): new 3, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 2, fail 1, block 0
Merge pull request #1123 from zhuyongyong/embeddingAPI-tests/getRemoteDebuggingUrl

[embedding][XWALK-2763] Add test cases for EmbeddingApi
Merge pull request #1074 from JianfengXu/xujf/webcl/basic

[webapi] Integrate WebCL conformance tests from Khronos
Update atip to support modello UI automation
Merge pull request #1239 from yugang/yugang/modello-apis

Update atip to support modello UI automation
[webapi] Update open_app to app_launcher

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 74, fail 0, block 0
[stability] Update open_app to app_launcher

Impacted tests(approved): new 0, update 5, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 5, fail 0, block 0
[webapi][xwalk-2411] Remove 1 test for battery level in Tizen SystemInfo

- Platform specific, IVI have no an on-board battery, this case is not applicable, change it to 'designed' in tests.full.xml, remove it from tests.xml
[webapi]Modify tests.full.xml file in tct-fonts-css3-tests and tct-text-css3-tests suite
[stability]Add new tcs

[Detailed commit message (if have)]
Impacted TCs num(approved):New 3,Update 0,Delete 0
UT result: Pass 3, Fail 0, Block 0
Merge pull request #1241 from yunxliu/yunxliu/webapi/modifyScript_case

[webapi] Update open_app to app_launcher
Merge pull request #1246 from linshen/shenlin/update-stability-1

[stability]Add new tcs