Added avatar image upload

app/User/Avatar/AvatarFileProvider.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Kanboard\User\Avatar;
+
+use Kanboard\Core\Base;
+use Kanboard\Core\User\Avatar\AvatarProviderInterface;
+
+/**
+ * Avatar Local Image File Provider
+ *
+ * @package  avatar
+ * @author   Frederic Guillot
+ */
+class AvatarFileProvider extends Base implements AvatarProviderInterface
+{
+    /**
+     * Render avatar html
+     *
+     * @access public
+     * @param  array $user
+     * @param  int   $size
+     * @return string
+     */
+    public function render(array $user, $size)
+    {
+        $url = $this->helper->url->href('AvatarFile', 'show', array('user_id' => $user['id'], 'size' => $size));
+        $title = $this->helper->text->e($user['name'] ?: $user['username']);
+        return '<img src="' . $url . '" alt="' . $title . '" title="' . $title . '">';
+    }
+
+    /**
+     * Determine if the provider is active
+     *
+     * @access public
+     * @param  array $user
+     * @return boolean
+     */
+    public function isActive(array $user)
+    {
+        return !empty($user['avatar_path']);
+    }
+}