Need to fix backend javascript/node.js functions

** Please visit links before bidding ** I currently have the Mosaico open source software running on a VM ([login to view URL]), and unfortunately there is a little bug with the javascript backend that runs on grunt/node.js. The project is to review and code/fix 3 remote calls (functions) that are needed for Mosaico to run properly on my VM. I will also appreciate to have comments on security, etc. The file that needs to be played with for a starter is the following: [login to view URL] Some explanations for that same file: [login to view URL] The message I presently receive on the console is the following: express deprecated [login to view URL](status, obj): Use [login to view URL](status).json(obj) instead node_modules/jquery-file-upload-middleware/lib/[login to view URL]:21 ..and Mosaico support team told me its related to the backend file as it's just a demo one and that I should code my own backend. More technical infos here: [login to view URL] Thank you for bidding.