[webapi][xwalk-2411] Remove 1 test for battery level in Tizen SystemInfo

- Platform specific, IVI have no an on-board battery, this case is not applicable, change it to 'designed' in tests.full.xml, remove it from tests.xml
[webapi]Modify tests.full.xml file in tct-fonts-css3-tests and tct-text-css3-tests suite
[wrt]Update tcs to approved
[Detailed commit message (if have)]
Impacted TCs num(approved):New 0,Update 1,Delete 0
UT result: Pass 1, Fail 0, Block 0
Merge pull request #1243 from haoxli/webapi/xwalk-2411

[webapi][xwalk-2411] Remove 1 test for battery level in Tizen SystemInfo
Merge pull request #1249 from linshen/shenlin/update-tests.xml

[wrt]Update tcs to approved
Merge pull request #1245 from chenxix/misc-uiautomation/add-tag-fonts

[webapi]Add a </testcase> tag to tests.full.xml file