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Improved standards compliance

Removed another instance of duplicate use of id field.
Removed old test code in word.html
Merge branch 'master' of https://github.com/ncss-2014-group-3/word-by-word into minor-changes
Fix for space-separated classes.

Fixed in another branch, but for the sake of the PR.
Merge pull request #44 from nhardy/minor-changes

Minor changes