First batch of i18n tests: translate mode
Updated translate attribute tests
Second update of translate attribute tests
Add media resource selection tests
Remove <base> elements
Add some cases to test the link and base elements

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Update tests for the base element a litte, and remove the link tests

- onerror checkpoint in link_events.html is covered by link-style-error-01.html
- link_type_mismatch_source.html uses setTimeout(); moreover, it won't fail
  even the feature is not implemented.
Add WIP tests for HTML's resolving URLs
Use add_cleanup
Test the ping attribute, plus some minor fixes
Update according to the new template

1. Update the code format
2. Update the reference specification
Test meta refresh
Test loading of nested browsing contests
Add spec link annotations
drawSystemFocusRing draws a focus ring
Added two false tests for drawSystemFocusRing
Removed unnecessary operation in drawSystemFocusRing_001. Added test for complex path in drawSystemFocusRing_004
Minor comment change in drawSystemFocusRing_004
Test loading CSS with <link>
Added one more test with element p