double image sizes
Return response for picture uploads as `text/plain` for IE9 support.
Fixing issue caused by new version of Express / Querystring
Merge branch 'changepic' of https://github.com/bp323/Hilary into changepic
Merge pull request #453 from stuartf/embiggen-images

Make preview images optimized for tablets and other high resolution devices
Adjust oae-content activity test to handle the larger preview sizes.
Merge pull request #482 from bp323/contentActivityTestFix

Adjust oae-content activity test to handle the larger preview sizes.