Huge role refactoring/cleanup. Other commits will propably follow. Because some bugs will exist. Still important for longrun and also for auto docs/help/slideshow generation

roles/webserver-injector-core/README.md

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+# Nginx Global Matomo & Theming Modifier Role 🚀
+
+This role enhances your Nginx configuration by conditionally injecting global Matomo tracking and theming elements into your HTML responses. It uses Nginx sub-filters to seamlessly add tracking scripts and CSS links to your web pages.
+
+---
+
+## Features
+
+- **Global Matomo Tracking**  
+  The role includes Matomo tracking configuration and injects the corresponding tracking script into your HTML.
+
+- **Global Theming**  
+  The role injects a global CSS link for consistent theming across your site.
+
+- **Smart Injection**  
+  Uses Nginx's `sub_filter` to insert the tracking and theming snippets right before the closing `</head>` tag of your HTML documents.
+
+
+This will automatically activate Matomo tracking and/or global theming based on your configuration.
+
+---
+
+## Author
+
+Developed by [Kevin Veen-Birkenbach](https://www.veen.world) 😎
+
+---
+
+Happy automating! 🎉

roles/webserver-injector-core/tasks/main.yml

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+- name: "Activate Global CSS for {{domain}}"
+  include_role:
+    name: webserver-injector-css
+  when: applications | is_feature_enabled('css',application_id)
+
+- name: "Activate Global Matomo Tracking for {{domain}}"
+  include_role:
+    name: webserver-injector-matomo
+  when: applications | is_feature_enabled('matomo',application_id)
+
+- name: "Activate Portfolio iFrame Notifier for {{ domain }}"
+  include_role:
+    name: webserver-injector-iframe
+  when: applications | is_feature_enabled('portfolio_iframe', application_id)
+
+- name: "Activate Javascript for {{ domain }}"
+  include_role:
+    name: webserver-injector-javascript
+  when: applications | is_feature_enabled('javascript', application_id)

roles/webserver-injector-core/templates/global.includes.conf.j2

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+{# Allow multiple sub_filters #}
+sub_filter_once off;
+sub_filter_types text/html;
+
+{% set modifier_css_enabled     = applications | is_feature_enabled('css',application_id) %}
+{% set modifier_matomo_enabled  = applications | is_feature_enabled('matomo',application_id) %}
+{% set modifier_iframe_enabled  = applications | is_feature_enabled('portfolio_iframe',application_id) %}
+{% set modifier_javascript_enabled  = applications | is_feature_enabled('javascript',application_id) %}
+
+{% if modifier_iframe_enabled or modifier_css_enabled or modifier_matomo_enabled or modifier_javascript_enabled %}
+sub_filter '</head>' ' 
+        {%- if modifier_css_enabled -%}
+          {%- include "roles/webserver-injector-css/templates/head_sub.j2" -%}
+        {%- endif -%}
+        {%- if modifier_matomo_enabled -%}
+          {%- include "roles/webserver-injector-matomo/templates/head_sub.j2" -%}
+        {%- endif -%}
+        {%- if modifier_iframe_enabled -%}
+          {%- include "roles/webserver-injector-iframe/templates/head_sub.j2" -%}
+        {%- endif -%}
+        {%- if modifier_javascript_enabled -%}
+          {%- include "roles/webserver-injector-javascript/templates/head_sub.j2" -%}
+        {%- endif -%}
+      </head>';
+{% endif %}
+
+{% if modifier_css_enabled | bool %}
+{% include 'roles/webserver-injector-css/templates/location.conf.j2' %}
+{% endif %}
+
+{% if modifier_matomo_enabled %}
+{% include 'roles/webserver-injector-matomo/templates/matomo-tracking.conf.j2' %}
+{% endif %}