Add upstream plugins

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

wp-content/plugins/all-in-one-event-calendar/lib/twig/loader.php

@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * Wrapper for Twig_Loader_Filesystem
+ *
+ * @author     Time.ly Network Inc.
+ * @since      2.1
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.Twig
+ */
+class Ai1ec_Twig_Loader_Filesystem extends Twig_Loader_Filesystem {
+
+    /**
+     * Gets the cache key to use for the cache for a given template name.
+     *
+     * @param string $name The name of the template to load
+     *
+     * @return string The cache key
+     *
+     * @throws Twig_Error_Loader When $name is not found.
+     */
+    public function getCacheKey( $name ) {
+        // namespace style separators avoid OS colisions.
+        $cache_key = str_replace( '/', '\\', $this->findTemplate( $name ) );
+        // make path relative
+        $cache_key = str_replace(
+            str_replace( '/', '\\', WP_PLUGIN_DIR . DIRECTORY_SEPARATOR ) ,
+            '',
+            $cache_key
+        );
+        return $cache_key;
+    }
+
+}