Added JSON response for a specific visualization page, to allow API callers to grab info on a specific viz. This existed for the list of all vises but not for a specific one
Merge branch 'master' of https://github.com/isenseDev/rSENSE
Made some graphics more consistent (iSENSE logo and green plus)
Made data-set buttons match the style of the site better
Merge pull request #323 from nickavv/master

Graphics Update