feat: Enhance gallery functionality with lightbox feature and improve icon sprite accessibility

- Added a lightbox feature for gallery images, allowing users to view photos in a modal with navigation controls.
- Updated the SVG sprite to include inline styles for better accessibility.
- Increased CSS specificity by doubling the `.vc-app` class to ensure styles override Astra theme defaults.
- Introduced new shortcodes for bus tours, about section, and articles in the VC_Sections class.
- Improved the handling of featured images in the single tour template for sharper display.
- Updated version number to 1.8.15.

astra-child-hoponhopoff/inc/footer.php

@@ -39,7 +39,10 @@ $hoho_footer_col = function ( $location ) {
 	<footer class="footer" id="footer">
 		<a class="ring-badge ring-badge--top" href="#top" aria-label="<?php echo esc_attr__( 'Back to top', 'hoponhopoff' ); ?>">
 			<svg class="ring-badge__ring" viewBox="0 0 100 100" aria-hidden="true">
-				<text class="ring-badge__text"><textPath href="#ringPathScroll" startOffset="0">BACK TO TOP · BACK TO TOP · </textPath></text>
+				<text class="ring-badge__text" text-anchor="middle">
+					<textPath href="#ringPathScroll" startOffset="25%"><?php echo esc_html__( 'BACK TO TOP', 'hoponhopoff' ); ?></textPath>
+					<textPath href="#ringPathScroll" startOffset="75%"><?php echo esc_html__( 'BACK TO TOP', 'hoponhopoff' ); ?></textPath>
+				</text>
 			</svg>
 			<span class="ring-badge__dot"><svg class="icon" aria-hidden="true"><use href="#i-arrow-up"></use></svg></span>
 		</a>