[webapi][XWALK-2450] Fix bug for contactsmanager

- Fix case bug for contactsmanager
- Failure analysis: The Contact.id attribute of type should be string by spec, but get number on crosswalk-9.37.194.0

Impacted tests(approved): new 0, update 4, delete 0
Unit test platform: [Android]
Unit test result summary: pass 3, fail 1, block 0
[webapi][XWALK-2508] Fix bug for CSSStyleAttribute

- Fix case bug for CSSStyleAttribute

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Android]
Unit test result summary: pass 1, fail 0, block 0
[webapi]Move manual case to behavior for gamepad

- Move 6 manual cases to behavior
- Remove 7 manual cases duplicate with usecase
- Change 2 manual case to auto

Impacted TCs num(approved): New 0, Update 8, Delete 7
Unit test Platform: Andriod
Unit test result summary: Pass 15, Fail 0, Blocked 0
[usecase-webapi] add vehicle back to tizen usecase

- Vehicle API status is resolved in TC-1450, so add vehicle back to tests.tizen.full
Fix bugs of CSS3 mediaqueries' test cases

A meaningless or invalid value should be treated as default.

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
[webapi][2439] improve some cases to match the latest spec

- Change readyState from number to string and change remotePort from string to number.
- delete 5 redundant cases according to the latest spec.

Impacted tests(approved): new 0, update 5, delete 5
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 5, fail 0, block 0
Fix bugs - CSS media query

 - Remove MediaQueries.js
 - Update the tests for meaningless values
 - Update the tests for invalid values
 - Change asnyc_test() to test() and etc

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
[embeddingAPI][XWALK-2376] Add 6 test cases for XWalkPreference

- Add 6 test cases and update 2 test cases for the latest feature in XWALK-2376

Impacted tests(designed|approved): new 6, update 2, delete 0
Unit test platform: [Android]
Unit test result summary: pass 8, fail 0, block 0
[webapi]update ref case from manual type to auto

Impacted tests(approved):new 0,update 33,delete 0
Unit test platform:[Android]
Unit test result summary:pass 8,fail 25,block 0
[webapi-usecase][XWALK-865] Add new properties of Vehicle for verifying

- Add get, set, subscribe, unsubscribe, getHistory, Availability properties of Vehicle in usecase
[usecase-webapi] Reduce the display area to fit the mobile screen for gamepad

- Fail Reason:[XWALK-2549]

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: [Android]
Unit test result summary: Pass 0, Fail 1, Blocked 0
[wrt-usecase][xwalk-2391]Update and add 3 TCs

Impacted TCs num(designed): New 3, Update 4, Delete 0
Merge pull request #910 from wanghongjuan/wanghongjuan/usecase/xwalk-2391

[wrt-usecase][xwalk-2391]Update and add 3 TCs
[wrt-usecase][xwalk-1947] Update TC steps

Impacted TCs num(approved): New 0, Update 1, Delete 5
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
Merge pull request #912 from wanghongjuan/wanghongjuan/usecase/xwalk-1947

[wrt-usecase][xwalk-1947] Update TC steps
Merge pull request #877 from yunxliu/yunxliu/webapi/contactsmanager

[webapi][XWALK-2450] Fix bug for contactsmanager
Merge pull request #881 from yunxliu/yunxliu/misc/CSSStyleAttribute

[webapi][XWALK-2508] Fix bug for CSSStyleAttribute
Merge pull request #882 from JianfengXu/xujf/behavior/gamepad

[webapi]Move manual case to behavior for gamepad
Merge pull request #887 from xinliux/xinliux/usecase/vehicle-verify

[usecase-webapi] add vehicle back to tizen usecase
Merge pull request #888 from xiaojunwu/xiaojunwu/mediaquery-fix-bugs

Fix bugs of CSS3 mediaqueries' test cases