* rename config values
- api -> backend
- nginx -> frontend
* job pods:
- set job_pull_policy from api_pull_policy (same as backend image)
- default to Always, but can be overridden for local deployment (same as backend image)
typo fix: CRAWL_NAMESPACE -> CRAWLER_NAMESPACE (part of #491)
ansible: set default label to :latest instead of :dev for
- mongodb: support passwords with '@' by escaping mongo username and password
- superadmin: update superadmin email and password after initial creation if updated in helm values