Add the ability to import a configuration with copy paste

[KnutssonDevelopment]

Uploading and downloading files to and from the interface can sometimes feel like a redundat step redundant as you sometimes aquire the file using some kind of remote too. This means that you first need to save it to a file in order to upload it to the interface.

It would be great if you could just paste the configuration in the interface, and also copy the new configuration directly from the interface as text.