[usecase-wrt]move usecase to separate folder

[Detailed commit message (if have)]
Impacted TCs num(approved): move all usecase to separate folder
Unit test platform: [android]
Unit test result summary: Pack to apk and isntall to verify the page showing ok
[wrt] Rename folder and update tcs for wrt extension
Merge pull request #518 from linshen/update-usecase-android

[usecase-wrt]move usecase to separate folder
Merge pull request #517 from kangxu/kangxu/wrt/wrt-extension-android-tests/update

[wrt] Rename folder and update tcs for wrt extension
[wrt]update config.xml change the id format for wgt install

[Detailed commit message]
Impacted TCs num(approved): New 0, update 0, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 0, Fail 0, Blocked 0
Merge pull request #519 from linshen/modify-wrt-i18n-tizen-test

[wrt]update config.xml change the id format for wgt install
[wrt] Update case id for wrt-manifest-android-tests
[wrt] Rename suite and update tcs for wrt packagemgt
[wrt] Fix issue for wrt-extension-android-tests
[wrt] update tests and mv googleplay from wrt to misc
[misc] Add 6 TCs due to cordova usecase update
[wrt] Rename and copy source for wrt-webfeatures-android-tests
[wrt] Rename and copy source for wrt-security-android-tests
Merge pull request #528 from wanghongjuan/wanghongjuan/misc/cordova-usecase

[misc] Add 6 TCs due to cordova usecase update
Merge pull request #526 from kangxu/kangxu/wrt/wrt-googleplay-android-tests/update

[wrt] update tests and mv googleplay from wrt to misc
Merge pull request #525 from kangxu/kangxu/wrt/wrt-extension-android-tests/fix

[wrt] Fix issue for wrt-extension-android-tests
Merge pull request #522 from kangxu/kangxu/wrt/wrt-packagemgt-android-tests/update

[wrt] Rename suite and update tcs for wrt packagemgt
Merge pull request #520 from kangxu/kangxu/wrt/wrt-manifest-android-tests/updateId

[wrt] Update case id for wrt-manifest-android-tests
Merge pull request #531 from kangxu/kangxu/wrt/wrt-security-android-tests/rename

[wrt] Rename and copy source for wrt-security-android-tests
Merge pull request #529 from kangxu/kangxu/wrt/wrt-webfeatures-android-tests/rename

[wrt] Rename and copy source for wrt-webfeatures-android-tests