Dont make variations database requests calls when variations aren't being used#1606

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JeffPyeBrook wants to merge 3 commits intowp-e-commerce:masterfrom JeffPyeBrook:dont-make-variations-calls-when-no-variations

+104-20

Commits on Nov 1, 2014

Add checks to variation class to avoid walking off the end of internal arrays
JeffPyeBrook
committed
remove error_log calls that were used for testing
JeffPyeBrook
committed

Commits on Nov 2, 2014

Avoid wpsc_has_variations processing when no variations terms are defined
JeffPyeBrook
committed