Ability to turn on "go to top" button on regular pages (fixes #115)

content/demo/index.md

@@ -1,6 +1,7 @@
 +++
 title = "Demo Page"
 [extra]
+go_to_top = true
 styles = ["demo/demo.css"]
 scripts = ["demo/demo.js"]
 katex = true

templates/base.html

@@ -24,6 +24,11 @@
 	{%- endif -%}
 	<main id="main-content">
 		{% block custom %}{% endblock custom %}
+		{%- if page.extra.go_to_top or section.extra.go_to_top -%}
+			<div id="buttons-container">
+				<a id="go-to-top" href="#top" title="{{ macros_translate::translate(key='go_to_top', default='Go to Top', language_strings=language_strings) }}"><i class="icon"></i></a>
+			</div>
+		{%- endif -%}
 		{% block content %}{% endblock content %}
 		{% include "partials/extra_features.html" %}
 	</main>