Merge pull request #652 from deniak/input-datetime

tests on global dates and times format
Merge pull request #651 from deniak/input-datetime-local

tests on datetime-local format
Merge pull request #662 from deniak/meter-element

test on meter element
Merge pull request #665 from deniak/datalist-options

test on datalist options
Merge pull request #656 from deniak/input-color

test on input type=color
Merge pull request #663 from deniak/fieldset-disabled

Test on disabled fieldset and its first legend element child
Merge pull request #464 from sgrekhov/submission/unipro-custom-elements

Submission/unipro custom elements
Change text to make sure the ref test passes only if the Ahem font is loaded
add tests for value flag mode is in default/value mode
fix/update tests' description
Update pull request #693

1. Add tests to check the child browsing context by frame, object and embed elements
2. Rename files and etc

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Update test2.html as review suggestions
Remvoe an unuseful assertion
Merge pull request #695 from deniak/disabled-elements

disabled elements cannot be focused
Update according to review suggestions
test toggle event attributes
add more use cases
reference python file on server instead of php
ws fixes
dropping superfluous variable declaration
Update according to review comments