Add new file/folder bugfix

[neelesh7singh]

Fixes #1003
I'm adding an event listener whenever newFile or newFolder model is opened which close the models if clicked outside the models.
I have also changed the ide reducer a little bit so that both models can't be opened at the same time in anyways.

I have verified that this pull request:

• has no linting errors (npm run lint)
• is from a uniquely-named feature branch and has been rebased on top of the latest master. (If I was asked to make more changes, I have made sure to rebase onto master then too)
• is descriptively named and links to an issue number, i.e. Fixes #123

[catarak]

Thanks for working on this! Woking great for me.