Implemented variable mapping to reduce complexity

roles/docker-nextcloud/templates/docker-compose.yml.j2

@@ -13,7 +13,7 @@ services:
       MYSQL_USER: "{{database_username}}"
       MYSQL_PASSWORD: "{{database_password}}"
       MYSQL_HOST: {{database_host}}:3306
-{% if not ( enable_central_database | lower | bool )  %}
+{% if not enable_central_database %}
     depends_on:
       - database
 
@@ -45,12 +45,12 @@ services:
       - data:/var/www/html
     entrypoint: /cron.sh
     depends_on:
-{% if not ( enable_central_database | lower | bool )  %}
+{% if not enable_central_database %}
       - database
 {% endif %}
       - redis
 volumes:
-{% if not ( enable_central_database | lower | bool )  %}
+{% if not enable_central_database %}
   database:
 {% endif %}
   data:

roles/docker-nextcloud/templates/nextcloud.conf.j2

@@ -4,7 +4,7 @@ server
 
   {% include 'roles/letsencrypt/templates/ssl_header.j2' %}
 
-  {% if nginx_matomo_tracking | bool %}
+  {% if nginx_matomo_tracking %}
     {% include 'roles/nginx-matomo-tracking/templates/matomo-tracking.conf.j2' %}
   {% endif %}