[webapi][XWALK-1877] Add cases to test attributions and methods of sso.

- Block Reason: tizen.sso not implement.

Impacted tests(approved): New 28, Update 0, Delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: Pass 0, Fail 0, Block 28
[embedding][XWALK-895] Add new embedding api tests for crosswalk

- Add 80 cases about the unit tests for embedding api
- Failure analysis:8 cases are failed because the methods of embedding api are not exist.
Others are failed or blocked because the methods of embedding api do not support.

Impated TCs num(approved): New 80, Update 0, Delete 0
Unit test platform: [Android]
Android Test result summary: Pass 68, Fail 12, Blocked 4
[misc-usecase][XWALK-442] Add a Tc for datacontrol

- Add a datacontrol TC for operating datas of the table

Impacted tests(approved): new 1, update 0, delete 0
Unit test platform: [Tizen IVI][Tizen M0]
Unit test result summary: pass 1, fail 0, block 0
[usecase-wrt] modify wrt-usecase-tizen-tests

[Detailed commit message]
Unit test platform: [tizen]
Unit test result summary: pack to wgt/xpk, all tcs is showing normally
[wrt] Separate wrt-rtcore-android-tests into 3 suites
[misc] Update WebAudio test purpose to reflect XWALK-1993

- Reword the README.md
- Remove trailing space from pack.sh
[wrt] Fix issue for wrt-extensionmanu-android-tests
[wrt] Fix issue for wrt-packagemgtmanu-android-tests
[misc] Format testcase.xsl and testresult.xsl

- Apply xmllint --format
- Replace tab with 2 spaces for indent
Merge pull request #533 from linshen/modify-wrt-usecase-tizen-test

[usecase-wrt] modify tizen usecase for wrt-usecase-tizen-tests
Merge pull request #534 from kangxu/kangxu/wrt/wrt-rtcore-android-tests/separate

[wrt] Separate wrt-rtcore-android-tests into 3 suites
Merge pull request #535 from kangxu/kangxu/wrt/wrt-extensionmanu-android-tests/fix

[wrt] Fix issue for wrt-extensionmanu-android-tests
Merge pull request #536 from kangxu/kangxu/wrt/wrt-packagemgtmanu-android-tests/fix

[wrt] Fix issue for wrt-packagemgtmanu-android-tests
[usercase-webapi] Add 'No Record' and disable delete button when data is empty

- Add 'No Record' in record list when database is empty
- Change delete button to be disabled when database is empty

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
[wrt] Rename suite and update tcs for wrt integration
[wrt] Move cases and remove suite for wrt-webappmgt-android-tests
[wrt] Rename suite for wrt-rtlib-android-tests
[usercase-webapi] Fix a removing Bookmark issue in webapi-usercase-tizen-tests.
The current logic of remove() is wrong which is trying to remove a new bookmark object.
Instead, remove() should remove an existing bookmark which must be already added.

BUG=XWALK-2073
[wrt] Rename suite and update tcs for wrt-autohost-android-tests
[misc] Beautify the WebAudio test case

- Indent index.html by 2 spaces
- Refine the test purpose, step, and expected result
- Move samples to res/ as that in behavior tests