V1 - Import files to Dev-App

[preetham]

This PR is part of implementation of issue #47 . Files can now be directly imported into Dev-App. Export of files from Dev-App is WIP.

• "multer" library is used. It is a middleware which handles multipart/form-data essentially used for uploading files.
• Single file can be imported at a time.

• Prevents import of files into "demo" folder.

  Signed-off-by: Kamidi Preetham kamidi@live.com

[brunobottazzini]

The patch looks amazing :)

Just two more things I suggest we to add:

1- I still think that it is a little bit small and the position of the button could be better. See the following image:

• The button Select Files should be replaced as Select File since it is only one file we are adding each time.
• The Select File button should be as in the same level as the label that shows what file is being uploaded

Maybe changing a little bit the html and make it a little bit wider would be great.

2- Imagining that the user might upload a huge file or the user's network is slow. We gotta provide an interface that shows him that we are working on things. He should not be able to close or upload another file when we are working on the upload. Also, it would amazing if we can put a loading GIF showing that there are working in progress.

So we should do something similar to the importing repository:

Any doubts on how to make these things, just talk to me anywhere.

Thanks! :+1: