Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/app/view/calendar/fallbacks.php

@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * The concrete class for the calendar page.
+ *
+ * @author     Time.ly Network Inc.
+ * @since      2.1
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.View
+ */
+class Ai1ec_Calendar_Avatar_Fallbacks extends Ai1ec_Base {
+
+    /**
+     * Default avatar fallbacks.
+     *
+     * @var array
+     */
+    protected $_fallbacks = array(
+        'post_thumbnail',
+        'content_img',
+        'category_avatar',
+    );
+
+    /**
+     * Get registered fallbacks.
+     *
+     * @return array
+     */
+    public function get_all() {
+        return apply_filters( 'ai1ec_avatar_fallbacks', $this->_fallbacks );
+    }
+
+    /**
+     * Register new avatar fallbacks.
+     *
+     * @param array $fallbacks Fallbacks.
+     *
+     * @return void Method does not return.
+     */
+    public function set( array $fallbacks ) {
+        $this->_fallbacks = $fallbacks;
+    }
+
+}