reworked poi details view

public/js/bootstrap-loader.js

@@ -43,11 +43,10 @@
   function initializeJqueryUi() {
     const $ = window.jQuery;
     $('#bootstrap-retry').button({ icon: 'ui-icon-refresh' });
-    $('.back-button').button({ icon: 'ui-icon-caret-1-w' });
+    $('.back-button').button();
     $('#clear-route-search').button({ icon: 'ui-icon-close', showLabel: false });
-    $('#slide-prev').button({ icon: 'ui-icon-caret-1-w', showLabel: false });
-    $('#slide-next').button({ icon: 'ui-icon-caret-1-e', showLabel: false });
-    $('#slide-controls').controlgroup();
+    $('#slide-prev').button();
+    $('#slide-next').button();
   }
 
   async function boot() {

public/js/slideshow.js

@@ -29,6 +29,7 @@
   function render() {
     const hasImages = images.length > 0;
     $('#slideshow').toggle(hasImages);
+    $('#slide-controls').attr('data-image-count', images.length);
     if (!hasImages) return;
 
     const image = images[index];