- Use classes to prompt lupdate to extract with a better
context (e.g. the class name, rather than plain "QObject")
so that the translation-lookup can use the named context.
- Add hard-coded "default" variant
- Add totally bogus Tajik translations, for testing purposes
- Use the just-refactored XKBListModel to store the xkb key-value
pairs for variants, drop most of the complicated implementation,
store just a single list of values.
- point to main Calamares site in the 'part of' headers instead
of to github (this is the "this file is part of Calamares"
opening line for most files).
- remove boilerplate from all source files, CMake modules and completions,
this is the 3-paragraph summary of the GPL-3.0-or-later, which has
a meaning entirely covered by the SPDX tag.