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
Added one more test with element p
Added tabindex on drawSystemFocusRing_005
Minor change for drawSystemFocusRing_001
Renamed drawSystemFocusRing to drawFocusIfNeeded
Merge pull request #457 from plehegar/submissions/2dcontext-plh

drawFocusIfNeeded draws a focus ring