Merge fix getEnabled method to prevent warning in logs

HostedByBlockPlugin.inc.php

@@ -22,7 +22,7 @@ class HostedByBlockPlugin extends BlockPlugin {
 	 * Determine whether the plugin is enabled. Overrides parent so that
 	 * the plugin will be displayed during install.
 	 */
-	function getEnabled() {
+	function getEnabled($contextId = null) {
 		if (!Config::getVar('general', 'installed')) return true;
 		return parent::getEnabled();
 	}