guardian/frontend — pull request #1626 by indeox (2013-09-17 17:13:40+00:00)
Title: Remove extraneous commas in MVT tag for Omniture

Fixes AB tests in Omniture being reported incorrectly

**Before:**
```,AB | ExpandableMostPopular | expandable-most-popular,,,```

**After:**
```AB | ExpandableMostPopular | expandable-most-popular```