A lot of code cleanup and code sanitation done.

pub/bin/php/Classes/pageNavbar.php

@@ -7,8 +7,9 @@ if (!defined('APP_INIT')) {
 
 class pageNavbar
 {
-    public $breadCrumb;
-    private $buttons = array();
+    public bool $breadCrumb;
+    private array $buttons = array();
+    private string $title;
 
     public function __construct($showBreadCrumb, $title = false)
     {
@@ -16,12 +17,12 @@ class pageNavbar
         $this->title = $title;
     }
 
-    public function AddHTMLButton($html)
+    public function AddHTMLButton($html): void
     {
-        array_push($this->buttons, $html);
+        $this->buttons[] = $html;
     }
 
-    public function outPutNavbar()
+    public function outPutNavbar(): void
     {
         ?>
         <div class="row">