Fixed few mega backend issues

[bharadwajpro]

These are the issues that are fixed by this PR.

1. Windows paths are separated by \. So I added that.
2. When the torrent file doesn't contain any folders and contains directly the files. The mega backend creates a folder name with the filename and now the array is empty. So an error occurs saying that the filename is empty. I fixed this issue by checking if the torrent has direct files or not and wrote a separate code for handling this.
3. Openshift is now working with mega backend. Port should be 8080 for it to work. Hence added that.

nodemon is just dev dependency. I used it while development. You can remove it if you want.
There are some tabs and space issues in this PR. I don't know how to deal with it. Hence I left it in that way.

[rakshans1]

I will review it and merge later