✨(invitations) add invitation RSVP links in HTML emails (#10)

Also include many fixes and scalingo deployment

compose.yaml

@@ -18,12 +18,12 @@ services:
   redis:
     image: redis:5
     ports:
-      - "6379:6379"
+      - "8924:6379"
 
   mailcatcher:
     image: sj26/mailcatcher:latest
     ports:
-      - "1081:1080"
+      - "8927:1080"
 
   backend-dev:
     build:
@@ -44,6 +44,7 @@ services:
     volumes:
       - ./src/backend:/app
       - ./data/static:/data/static
+      - ./src/frontend/apps/calendars/src/features/i18n/translations.json:/data/translations.json:ro
       - /app/.venv
     networks:
       - lasuite
@@ -76,6 +77,7 @@ services:
     volumes:
       - ./src/backend:/app
       - ./data/static:/data/static
+      - ./src/frontend/apps/calendars/src/features/i18n/translations.json:/data/translations.json:ro
       - /app/.venv
 
   nginx: