Draft: feat(settings): add yaml-based settings loader
The new abstract configuration loader allows to configure a grouprise site with fewer settings, since many related settings are deducted automatically, e.g.:
-
domain
is sufficient for all mail addresses -
transport_security
determines all SSL-related Django settings -
template_directories
allows injection of local template directories (without cryptic manipulation of Django'sTEMPLATES[0]["DIRS"]