[ivi-tct][webapi] Avoid add testharness repeatedly

- In some tests, testharness.js has been added by unitcommon.js, add testharness.js repeatedly will create a timeout result, so update it following unitcommon.js

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 188, fail 18, block 1
Merge pull request #1498 from haoxli/tct/webapi/tizen-systeminfo-update

[ivi-tct][webapi] Avoid add testharness repeatedly
[ivi-tct][XWALK-3195] Update behavior app version info
Merge pull request #1503 from kangxu/behavior/version/update

[ivi-tct][XWALK-3195] Update behavior app version info
[ivi][webapi][XWALK-3190] Update tests from w3c

- Update latest tests from w3c
- Reomve touchevent/TouchList_attributes_exist.html and touchevent/Touch_attributes_exist.html, since w3c/single-touch-manual.html contain these check point

Impacted tests(approved): new 0, update 41, delete 0
Unit test platform: [android] crosswalk-10.38.222
Unit test result summary: pass 41, fail 0, block 0
[ivi-tct][webapi][xwalk-3179] Decrease timeout of AlarmRelative_getRemainingSeconds_return_null

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 1, fail 0, block 0
Merge pull request #1505 from haoxli/tct/webapi/xwalk-3179

[ivi-tct][webapi][xwalk-3179] Decrease timeout of AlarmRelative_getRemainingSeconds_return_null
Merge pull request #1494 from xinliux/webapi/XWALK-3190

[ivi-tct][webapi][XWALK-3190] Update tests from w3c