Fix typo: consolse => console
Added comment about strict mode & var

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extra : amend_source : 919b36b386ad27c86086a7eed2b3710a5092867d
Rename soln7 to ES5.1 to clarify what it means.

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rename : solutions/complete/javascript/EamonNerbonne/soln7/goal.js => solutions/complete/javascript/EamonNerbonne/ES5.1/goal.js