Misc Fixes (#91 An error occurred )

* Suppress "Display title and tagline" in customizer (fixes #88
  
An error occurred
 
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* Suppress header text colour in customizer (fixes #86
  
An error occurred
 
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* Migrate site logo (fixes #85
  
An error occurred
 
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* Change 404 message when catalog is empty (fixes #90
  
An error occurred
 
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inc/activation/namespace.php

@@ -97,6 +97,11 @@ function create_default_content() {
 		wp_delete_post( 2, true );
 		wp_delete_comment( 1, true );
 
+		// Migrate site logo
+		if ( ! empty( $mods['custom_logo'] ) ) {
+			set_theme_mod( 'custom_logo', $mods['custom_logo'] );
+		}
+
 		// Add "pb_aldine_activated" option to enable check above
 		add_option( 'pb_aldine_activated', 1 );
 	}

inc/customizer/namespace.php

@@ -15,6 +15,14 @@ use PressbooksMix\Assets;
  * @param \WP_Customize_Manager $wp_customize Theme Customizer object.
  */
 function customize_register( \WP_Customize_Manager $wp_customize ) {
+
+	// Remove unsupported WP controls, @see \WP_Customize_Manager::register_controls
+
+	$wp_customize->remove_control( 'display_header_text' );
+	$wp_customize->remove_control( 'header_textcolor' );
+
+	// Add Pressbooks controls
+
 	$wp_customize->get_setting( 'blogname' )->transport         = 'postMessage';
 	$wp_customize->get_setting( 'blogdescription' )->transport  = 'postMessage';
 	$wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';

page-catalog.php

@@ -46,6 +46,21 @@ else :
 	global $wp_query;
 	$wp_query->set_404();
 	status_header( 404 );
-	get_template_part( 404 );
+	get_header();
+	?>
+	<div id="primary" class="content-area">
+		<main id="main" class="site-main">
+			<article class="page">
+				<header class="entry-header">
+					<h1 class="entry-title"><?php _e( 'No Books Found', 'pressbooks' ); ?></h1>
+				</header>
+				<div class="entry-content" style="text-align:center;">
+					<p><?php _e( 'Your catalog is empty.', 'pressbooks' ); ?></p>
+				</div>
+			</article>
+		</main>
+	</div>
+	<?php
+	get_footer();
 	exit();
 endif;