[wrt] Update config for wrt-common-webapp-tests
[wrt][XWALK-1367] Update manifest.json for launch_fullscreen_true_tests
[wrt][XWALK-1720] Update test steps for Crosswalk_Google_Play_Multiple
[wrt] Update tests.xml for tct-pm-wrt-tests
Merge pull request #252 from kangxu/kangxu/wrt/wrt-common-webapp-tests/updateConfig

[wrt] Update configure for wrt-common-webapp-tests
Merge pull request #260 from yufeichen/yufeichen/wrt-update-tests.xml-for-tct-pm-wrt-tests

[wrt] Update tests.xml for tct-pm-wrt-tests
Merge pull request #256 from kangxu/kangxu/wrt/googleplay/Crosswalk_Google_Play_Multiple/update

[wrt][XWALK-1720] Update test steps for Crosswalk_Google_Play_Multiple
Merge pull request #255 from kangxu/kangxu/wrt/fullscreen/update

[wrt][XWALK-1367] Update manifest.json for launch_fullscreen_true_tests
[wrt] update wrt-common-web-app upper to lower