-Fixed subtle bug with passing fields that contain escaped json characters.
Merge pull request #1121 from mmcguinn/mm1119

-Fixed subtle bug with passing fields that contain escaped json characters.
Fixing src and polaroid sizes for the photos tab on the vis.
Fixed media objects for datasets to use recursive hash to get src and tn_src
Updated js to use the values from the to_hash
Merge pull request #1125 from jdalphon/fix_viz_pics

Fixing src and polaroid sizes for the photos tab on the vis.
Merge pull request #1126 from mmcguinn/mm1108

-Added more integration tests for the vis.
Adding more testing for media objects.
-Got to 100% test on fields controller.
-Added more integration testing for visualizations.
-Fixed up some bad code in fields.
Merge branch 'master' of github.com:isenseDev/rSENSE into mm1108
Merge pull request #1130 from jdalphon/testing

Adding more testing for media objects.
Merge branch 'master' of github.com:isenseDev/rSENSE into mm1108