Fix static access modifiers (#36)

Author: iMattPro

event/main_listener.php

@@ -19,7 +19,7 @@
 */
 class main_listener implements EventSubscriberInterface
 {
-	static public function getSubscribedEvents()
+	public static function getSubscribedEvents()
 	{
 		return array(
 			'core.user_setup'	=> 'load_language_on_setup',

migrations/release_1_0_0.php

@@ -16,7 +16,7 @@ public function effectively_installed()
 		return isset($this->config['acme_demo_goodbye']);
 	}
 
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array('\phpbb\db\migration\data\v310\alpha2');
 	}

migrations/release_1_0_1.php

@@ -16,7 +16,7 @@ public function effectively_installed()
 		return $this->db_tools->sql_column_exists($this->table_prefix . 'users', 'user_acme');
 	}
 
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array('\acme\demo\migrations\release_1_0_0');
 	}