Initial tests for Pointer Lock: constructor, idlharness
bubbles should be false for pointer lock events
Now using MouveEvent contructors and test for movementX and movementY. Fixed idlharness to properly instantiate objects
Addressed most of the comments in https://critic.hoppipolla.co.uk/showcomments?review=461
Fixed bubbles, movementX, and movementY when initialized through a dictionary
Added different event type as well
Revolves https://critic.hoppipolla.co.uk/showcomment?chain=1124
Merge pull request #465 from plehegar/submissions/pointerlock-plh

Initial tests for Pointer Lock: constructor, idlharness