Allow disabling the share preview card (fixes #122)

config.toml

@@ -178,6 +178,8 @@ csp = [
 	{ directive = "base-uri", domains = ["'none'"] },
 	{ directive = "form-action", domains = ["'none'"] }
 ]
+# Uncomment this to disable the card displayed in share previews
+# card = false
 
 [extra.nav]
 # Whether to automatically hide nav when not hovered or focused

templates/partials/head.html

@@ -119,6 +119,8 @@
 	<meta property="og:title" content="{% include 'partials/title.html' %}" />
 	<meta property="og:url" content="{{ current_url | default(value='/') | safe }}" />
 	<meta property="og:description" content="{% include 'partials/description.html' %}" />
+	{%- if config.extra.card is not defined or config.extra.card != false -%}
 		<meta property="og:image" content="{% include 'partials/card.html' %}" />
+	{%- endif -%}
 	<meta property="og:locale" content="{{ macros_translate::translate(key='date_locale', default='en_US', language_strings=language_strings) }}" />
 </head>