Fix PHP warnings

Author: technicalguru

src/WebApp/BootstrapTheme/ImageCarouselRenderer.php

@@ -30,7 +30,8 @@ public function renderChildren() {
 			foreach ($images AS $image) {
 				$active = $idx == 0 ? 'active' : '';
 				$nav   .= '<li data-target="#'.$id.'" data-slide-to="'.$idx.'" class="'.$active.'"></li>';
-				$title  = htmlentities($image->image->getTitle());
+				$title  = $image->image->getTitle();
+				if ($title != NULL) $title = htmlentities($title);
 				$inner .= '<div class="carousel-item '.$active.'">'.
 				             '<img src="'.$image->image->getUrl().'" class="d-block w-100" alt="'.$title.'" title="'.$title.'">';
 				if ($image->title || $image->description) {

src/WebApp/Component/ImageCarousel.php

@@ -13,10 +13,10 @@ public function __construct($parent) {
 
 	public function addImage($image, $title = NULL, $description = NULL) {
 		$img = new \stdClass;
-		$img->image      = is_string($image) ? new Image($this, $image, $title) : $image;
-		$img->title      = $title;
-		$img->descripton = $description;
-		$this->images[]  = $img;
+		$img->image       = is_string($image) ? new Image($this, $image, $title) : $image;
+		$img->title       = $title;
+		$img->description = $description;
+		$this->images[]   = $img;
 	}
 
 	public function getImages() {