[repository] enabled sources refactoring: to avoid error, we should always have all known source in repo.sources_by_uri and only enabled ones in repo.sources, so we still have access to the definition of temporarily disabled sources

include *.py
include */*.py
recursive-include data external_resources *.gif *.png *.css *.ico *.js
recursive-include i18n *.pot *.po
recursive-include wdoc *