[webapi][XWALK-2277] Fix the bug that fail to found TC when running sso

Impacted tests(approved): New 0, Update 23, Delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: Pass 0, Fail 23, Block 0
[usecase-webapi][XWALK-2406]Update test steps description for Content

- Fail Reason: When ran getDirectories method, neither callback was invoked.

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: [Tizen IVI]
Unit test result summary: Pass 0, Fail 1, Blocked 0
[webapi][XWALK-2363] Fix issue by using regexp to verify nativeAPIVersion of SystemInfo

- Because IVI platform version may be change, but TC set default nativeAPIVersion 2.2, so update version verfy by regexp.

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Tizen IVI
Tizen test result summary: Pass 1, Fail 0, Blocked 0
[embedding][XWALK-2239] Add one usecase to verfiy animatible.

- Add one usecase to verfiy animatible by leveraging developer's sample.
- Remove the redundant LoadAppFromManifestActivity.java and XWalkEmbeddingAPISample.java code.

Impacted tests(approved): new 1, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 1, fail 0, block 0
[usecase-embedding][XWALK-2327] Add one testpoint for show and hide in embedding sample.

- Add one testpoint in embedding sample for onshow and onhide.
- Remove the unserviceable code because XWalkView has done these.
- Change the url for OnHideOnShowActivity.

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Android]
Unit test result summary: pass 1, fail 0, block 0
[embedding][XWALK-2238] Add and update test cases for calling JS function and using XHR requests in XWalkView.

- Add test 2 cases for calling JS function with load and using XHR requests in XWalkView.
- Update 1 case for calling JS function with evaluateJavascript.

Impacted tests(approved): new 2, update 1, delete 0
Unit test platform: [Android]
Unit test result summary: pass 3, fail 0, block 0
[behavior][XWALK-1565]Add powerfailure testcase for behavior

[Detailed commit message (if have)]
Impacted TCs num(designed): New 1, update 0, deleted 0
Unit test platform: [tizen]
[sample] Remove unreferenced style file
Merge pull request #836 from zqzhang/test.css

[sample] Remove unreferenced style file
Merge pull request #835 from linshen/wrt/shenlin/movetctbehaviorpowerfailure

[behavior][XWALK-1565]Add powerfailure testcase for behavior
[webapi][XWALK-2372] Update screen orientation tests to reflect chromium 38 implementation

- Update screen orientation follow latest spec: http://w3c.github.io/screen-orientation/
- Failure reason: lock(), unlock(), type, angle and onchange all attributes of ScreenOrientation are undefined.

Impacted TCs num(approved): New 0, Update 14, Delete 0
Unit test Platform: Tizen IVI
Tizen test result summary: Pass 2, Fail 12, Blocked 0
[misc-wrt][xwalk-2329] Add one test

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
[sample] Remove unreferenced font
[misc] Update case available link

- Those tests results are wanming help me test

Impacted TCs num(approved): New 0, Update 8, Delete 0
Unit test Platform: Android
Android test result summary: Pass 8, Fail 0, Block 0
[webapi-usecase][XWALK-2471] Adding back AudioSystem and SSO to tizen

- Add AudioSystem and SSO to tests.tizen.full.xml

Impacted TCs num(approved): New 0, Update 2, Delete 0
Unit test Platform: Tizen IVI:crosswalk 9
Tizen test result summary: Pass 2, Fail 0, Blocked 0
Merge pull request #839 from xinliux/xinliux/usecase/XWALK-2471

[webapi-usecase][XWALK-2471] Adding lock of AudioSystem and SSO to tizen
Merge pull request #832 from wanghongjuan/wanghongjuan/misc/system

[misc-wrt][xwalk-2329] Add one test
Add apk common options support in pack tool
Merge pull request #838 from wanghongjuan/wanghongjuan/misc/sampleapp

[misc] Update case available link
Split BDD ui automaton tests from package app