- We must assume that apart from Plinth there will be user or user-agent
changes to the configuration files. In this case the value may be set
something other than '1' day.
- Remove emacs mode line as emacs automatically detect Python files
based on the #! line.
- End comments with a '.'.
- Use single quotes instead of double quotes for string for consistensy.
- Update message to say that it take more than a minute to finish
upgrades. Some times it takes a lot more than that.