- Use namespace CalamaresUtils::Locale consistently for this service.
- Move locale-related non-GUI support code from the Welcome module
to libcalamares; these are generally useful. Both Label (naming a locale)
and LabelModel (managing a bunch of those Labels) have been moved.
- Move widget behavior into its own container / widget class
- Change the RequirementsChecker class to just check the
requirements, returning a results list
- Connect from the module manager to the results widget.
