Merge pull request #209 from huangnoah/fix-70

fix some case
Merge pull request #210 from huangnoah/fix-70

fix some case
Merge pull request #211 from huangnoah/fix-70

fix case
fix-some-testcases
add remove testcase
fix some case
Merge pull request #212 from huangnoah/fix-70-tablet

fix some case
Merge branch '7.0' of https://github.com/zkoss/ztltest into fix-testcase
update some test cases
Merge pull request #214 from RaymondChao/fix-testcase

Fix some testcases
fix some vision test case