make synnefo URLs consistent and configurable
https://service.deployment.vendor.tld/service-base/api-prefix/hard/path |___________________________________| |__________| |________| |_______| BASE_HOST BASE_PATH PREFIX Hardcoded...
Remove deprecated quotaholder settings
Remove remaining astakos and pithos-related references of quotaholderfrom settings and docs.
astakos: WIP move all api calls under ``/astakos/api``
Refs: #3340
Testing scripts for astakos projects