Fixes .find() is undefined issue when sorting is enabled#23

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WonSong wants to merge 3 commits intomankindsoftware:masterfrom

WonSong:master

Commits on Aug 1, 2014

Fixes .find() is undefined issue when sorting is enabled
Won Song
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Commits on Aug 2, 2014

Making determineActiveClass explicit
Won Song
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Reverting the previous change, and fixing typ'o related to determineActiveClass
Won Song
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