Remove global directive from tests; it's set in .jshintrc.
Fix typo.
testrunner.htm: fix undefined variables.
Merge pull request #485 from XhmikosR/globals

Move global config to JSHint's configuration.
Remove unused variables.
Merge pull request #487 from XhmikosR/unused

Remove unused variables.
Merge pull request #486 from XhmikosR/testrunner-undef

Fix undefined variables and typo
Add "load-grunt-tasks" and "time-grunt" plugins.

Drop node.js 0.8 support.

Conflicts:
	Gruntfile.js

Conflicts:
	Gruntfile.js
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