Add config option to hide the thumbnails

The thumbnails, e.g. of the Youtube spout bloat the layout of the single
items while collapsed. This allows the user to hide the thumbnails via a
config option.

NEWS.md

@@ -1,4 +1,9 @@
 # selfoss news
+## 2.19 – unreleased
+### New features
+- Thumbnails can be disabled ([#897](https://github.com/SSilence/selfoss/pull/897))
+
+
 ## 2.18 – 2018-03-05
 ### New features
 - Full-text RSS spout is now able to extract content from PDFs ([#897](https://github.com/SSilence/selfoss/pull/897))

defaults.ini

@@ -40,3 +40,4 @@ env_prefix=selfoss_
 camo_domain=
 camo_key=
 scroll_to_article_header=1
+show_thumbnails=1

spouts/twitter/usertimeline.php

@@ -257,7 +257,7 @@ public function getContent() {
                 $item = $item->retweeted_status;
             }
 
-            if (isset($item->extended_entities) && isset($item->extended_entities->media) && count($item->extended_entities->media) > 1) {
+            if (isset($item->extended_entities) && isset($item->extended_entities->media) && count($item->extended_entities->media) > 0) {
                 foreach ($item->extended_entities->media as $media) {
                     if ($media->type === 'photo') {
                         $result .= '<p><a href="' . $media->media_url_https . ':large"><img src="' . $media->media_url_https . ':small" alt=""></a></p>' . PHP_EOL;

templates/item.phtml

@@ -57,7 +57,7 @@
     <a href="<?= $this->item['link']; ?>" class="entry-link"></a>
 
     <!-- thumbnail -->
-    <?php if (isset($this->item['thumbnail']) && strlen(trim($this->item['thumbnail'])) > 0) : ?>
+    <?php if (\F3::get('show_thumbnails') && isset($this->item['thumbnail']) && strlen(trim($this->item['thumbnail'])) > 0) : ?>
     <div class="entry-thumbnail">
         <a href="<?= \helpers\Anonymizer::anonymize($this->item['link']); ?>" target="_blank" rel="noopener noreferrer">
             <img src="<?= 'thumbnails/' . $this->item['thumbnail']; ?>" alt="<?= htmLawed(htmlspecialchars_decode($this->item['title']), ['deny_attribute' => '*', 'elements' => '-*']); ?>" />