feat: change log output and template structure

- new global variable debugMode
- demo templates are now based on hippie defaults joined with template inheritance
- add log macros
- new function logAdd()
- log uses global state

source/screens/layouts.njk

@@ -2,7 +2,7 @@
 {% set pageBase = "../" %}
 {% set pageId = "layouts" %}
 
-{% extends "demo/_extended.njk" %}
+{% extends "demo/_docs.njk" %}
 
 {% block title %}Gestaltungen{% endblock %}
 {% block head %}
@@ -322,7 +322,8 @@
   <script src="{{ pageBase }}js/variables.js"></script>
   <script src="{{ pageBase }}js/functions.js"></script>
   <script src="{{ pageBase }}js/global.js"></script>
-  <!-- endbuild -->
+  {{ log.asset(true) }}
+  {{ log.log('Assets loaded.', assetsLoaded) }}
   <script>
     // Page specific
     // ------------------------------------------------------------------------------