Updated visualizations to show Bar and Histogram when data set consists of only one row of data
Hid the file and name table headers when there are no assocaited  media files.
Merge pull request #1416 from umin18/yc1391

Updated visualizations to show Bar and Histogram when data set consists ...
Merge pull request #1419 from umin18/yc1415

Yc1415
Minor fix for file name on media pull request.
Commenting out Jake's contribution key feature.
Removed stray -
added migration back in
Merge pull request #1420 from jaypoulz/kcTemp

Minor fix for file name on media pull request.
Merge pull request #1421 from jaypoulz/kcTemp2

Commenting out Jake's contribution key feature for release.