feat: Change usage of templates

- Remove unnecessary super blocks
- Use simple templates
- Remove pageBase variable from templates

source/screens/demo/examples/clock.liquid

@@ -3,13 +3,12 @@ title: Clock
 tags:
 - demoExample
 ---
-{% assign pageBase = "../../" -%}
 {% assign bodyClass = "body_clock" -%}
-{% layout "hippie/full.liquid" %}
+{% layout "hippie/simple.liquid" %}
 
 {% block body %}
 <main>
-	<canvas id="clock" width="512" height="512"></canvas>
+	<canvas id="rings" width="512" height="512"></canvas>
 	<p>
 		<button id="tglFormat">12-Stunden-Format</button>
 	</p>
@@ -17,10 +16,9 @@ tags:
 {% endblock %}
 
 {% block script %}
-{{ block.super -}}
 <script>
 	// Page script
-	const canvas = document.getElementById('clock');
+	const canvas = document.getElementById('rings');
 	const ctx = canvas.getContext('2d');
 	let is24HourFormat = true;
 	const colorDayOfWeek = getComputedStyle(document.documentElement).getPropertyValue('--clock-color-yellow').trim();