Backup and EmonScripts pull request submitted

Hi all,

Whilst working through a new install and restore, I found a couple of minor tweaks and have submitted the following pull requests, they are small and fairly well ring fenced so hope are easy to review and accept.

Tidy up comments and install guidance after earlier pull request changed some emoncms_modules to emoncms_emonpi_modules:

And a cleanup for import/ export to correct module.json location, added ‘cd’ step into, added a variable to define config.ini location and remove inconsistencies in messages etc

Please let me know if you have any queries relating to either PR