[webapi][XWALK-2147] Add default color reference on page
[wrt][XWALK-1591]Fix XWALK-1591

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 3, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 3, Fail 0, Blocked 0
[wrt]Update pack.sh to wrt-i18nmanu-tizen-tests

Unit test platform: [tizen]
Unit test result summary: Pack to wgt and pass 1 , Fail 0, Blocked  0
[wrt] Update pack.sh for wrt-internetstdmanu-android-tests
[usecase-webapi] Improve SystemInfo usecase

- Adjust the case with screen view

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 1, fail 0, block 0
[usecase-webapi] improve ResourceTime w3c usecase

- Show image after loading it
- Use li to format the information

Impacted tests(designed|approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 1, fail 0, block 0
[usecase-webapi] Improve MediaQueries w3c usecase

- Update the content description
- Change the page interface and add details for every button

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 1, fail 0, block 0
[wrt] Clean up for wrt common
[wrt]Add test sample app to wrt-packagemgtmanu-tizen-tests
[usecase-webapi] Fix issue of installing fail

 -verified, this suite can be installed/uninstalled sucessfully
[usecase-wrt] Remove unnecessary files in wrt-usecase-android-tests
[webapi] Fix XWALK-2250 for nfc

Modify the id property of application element
Modify packing scripts
Failure analysis: nfc does not support

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 12, block 0
[wrt] Update xml and tcs for wrt-packagemgt-android-tests
[embedding][XWALK-1052] Leverage unit tests about XWalkExtension interface

- Add 3 cases about tests for extension api according to the developer's unit tests.

Impacted tests(approved): new 3, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 3, fail 0, block 0
[wrt]update 2 tcs show infomation wrt-commandlinemanu-tizen-tests

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0 update 2, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 2, Fail 0, Blocked 0
[wrt] Update tcs for wrt extension and sharemode
Merge pull request #641 from linshen/pr-02

[wrt]Add test sample app to wrt-packagemgtmanu-tizen-tests
Merge pull request #628 from linshen/update-i18n-wgt

[wrt]Update pack.sh to wrt-i18nmanu-tizen-tests
[usecase-webapi][XWALK-2252] Correct the description of 5th subcase about Flexible

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 1, fail 0, block 0
[behavior] Delete formdialog/hotwebsite/wrtintegration tcs