Adding new feature for storing images of a measurement record.
Added arrays support in measurement model and other few relevant changes.
Just a small change in the image test.
A small change for the response of measurement record.
Made small change in the comment.
Made changes as per the suggestion on pull request,except for the async version of mimeCheck.
Added some more changes for pull request.
Few leftover changes in the previous commit.
Merge pull request #18 from fashiontec/ImageFeature-Story26

Image feature story26