New CalamaresAddBrandingSubdirectory macro.
Branding component choice in settings.conf.
Dummy default branding component.
Works better when you actually add it to CMakeLists.txt.
Load branding component name from Settings.
Groundwork for branding loader/manager.
Hook up the branding component code path in CalamaresApplication.
Merge pull request #15 from calamares/master

Merge master