Added wait in installation of Joomla

Author: yvesh

src/JoomlaBrowser.php

@@ -203,6 +203,7 @@ public function installJoomla()
 		$this->debug('I click Next');
 		$I->click(['link' => 'Next']);
 		$this->debug('I wait Joomla to remove the old database if exist');
+		$I->wait(1);
 		$I->waitForElementVisible(['id' => 'jform_sample_file-lbl'], 30);
 
 		$this->debug('I install joomla with or without sample data');