reorganize (config) files and templates into one "resources" dir

This groups the files and templates for each host together and therefore
makes it easier to see all the (config) files for a host.

Also clean up incorrect, unused docker_compose config for mumble and
clean up unused engelsystem configs.

resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2

@@ -0,0 +1,106 @@
+---
+# see https://github.com/pretalx/pretalx-docker/blob/main/docker-compose.yml
+
+services:
+  database:
+    image: docker.io/library/postgres:15-alpine
+    environment:
+      - "POSTGRES_USER=pretalx"
+      - "POSTGRES_PASSWORD={{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/pretalx/DB_PASSWORD", create=false, missing="error") }}"
+      - "POSTGRES_DB=pretalx"
+    volumes:
+      - database:/var/lib/postgresql/data
+    restart: unless-stopped
+
+  redis:
+    image: redis:latest
+    restart: unless-stopped
+    volumes: 
+      - redis:/data
+  
+  static:
+    image: docker.io/library/nginx
+    restart: unless-stopped
+    volumes:
+      - public:/usr/share/nginx/html
+    ports:
+      - 8081:80
+
+  pretalx:
+    image: pretalx/standalone:latest
+    entrypoint: gunicorn
+    command:
+      - "pretalx.wsgi"
+      - "--name"
+      - "pretalx"
+      - "--workers"
+      - "4"
+      - "--max-requests"
+      - "1200"
+      - "--max-requests-jitter"
+      - "50"
+      - "--log-level=info"
+      - "--bind=0.0.0.0:8080"
+    ports:
+      - 8080:8080
+    restart: unless-stopped
+    environment:
+      PRETALX_DATA_DIR: /data
+      PRETALX_FILESYSTEM_MEDIA: /public/media
+      PRETALX_FILESYSTEM_STATIC: /public/static
+      PRETALX_SITE_URL: https://pretalx.hamburg.ccc.de
+      PRETALX_DB_TYPE: postgresql
+      PRETALX_DB_NAME: pretalx
+      PRETALX_DB_USER: pretalx
+      PRETALX_DB_PASS: "{{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/pretalx/DB_PASSWORD", create=false, missing="error") }}"
+      PRETALX_DB_HOST: database
+      PRETALX_MAIL_FROM: "pretalx@hamburg.ccc.de"
+      PRETALX_MAIL_HOST: "cow-intern.hamburg.ccc.de"
+      PRETALX_CELERY_BACKEND: redis://redis/1
+      PRETALX_CELERY_BROKER: redis://redis/2
+      PRETALX_REDIS: redis://redis/3
+      PRETALX_REDIS_SESSIONS: "True"
+      # PRETALX_LOGGING_EMAIL: noc@hamburg.ccc.de
+      PRETALX_LANGUAGE_CODE: de
+      PRETALX_TIME_ZONE: Europe/Berlin
+    volumes:
+      - pretalx:/data    
+      - public:/public
+
+  celery:
+    image: pretalx/standalone:latest
+    command:
+      - taskworker
+    restart: unless-stopped
+    environment:
+      PRETALX_DATA_DIR: /data
+      PRETALX_FILESYSTEM_MEDIA: /public/media
+      PRETALX_FILESYSTEM_STATIC: /public/static
+      PRETALX_SITE_URL: https://pretalx.hamburg.ccc.de
+      PRETALX_DB_TYPE: postgresql
+      PRETALX_DB_NAME: pretalx
+      PRETALX_DB_USER: pretalx
+      PRETALX_DB_PASS: "{{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/pretalx/DB_PASSWORD", create=false, missing="error") }}"
+      PRETALX_DB_HOST: database
+      PRETALX_MAIL_FROM: "pretalx@hamburg.ccc.de"
+      PRETALX_MAIL_HOST: "cow.hamburg.ccc.de"
+      PRETALX_MAIL_PORT: 587
+      PRETALX_MAIL_USER: pretalx@hamburg.ccc.de
+      PRETALX_MAIL_PASSWORD: "{{ lookup("community.general.passwordstore", "noc/vm-secrets/chaosknoten/pretalx/PRETALX_MAIL_PASSWORD", create=false, missing="error") }}"
+      PRETALX_MAIL_TLS: "true"
+      PRETALX_CELERY_BACKEND: redis://redis/1
+      PRETALX_CELERY_BROKER: redis://redis/2
+      PRETALX_REDIS: redis://redis/3
+      PRETALX_REDIS_SESSIONS: "True"
+      # PRETALX_LOGGING_EMAIL: noc@hamburg.ccc.de
+      PRETALX_LANGUAGE_CODE: de
+      PRETALX_TIME_ZONE: Europe/Berlin
+    volumes:
+      - pretalx:/data    
+      - public:/public
+
+volumes:
+  database: {}
+  redis: {}
+  pretalx: {}
+  public: {}