Send feedback from upgrading apps to the upgrade ui

core/ajax/update.php

@@ -18,6 +18,12 @@ if (OC::checkUpgrade(false)) {
 	$updater->listen('\OC\Updater', 'dbSimulateUpgrade', function () use ($eventSource, $l) {
 		$eventSource->send('success', (string)$l->t('Checked database schema update'));
 	});
+	$updater->listen('\OC\Updater', 'appUpgradeCheck', function () use ($eventSource, $l) {
+		$eventSource->send('success', (string)$l->t('Checked database schema update for apps'));
+	});
+	$updater->listen('\OC\Updater', 'appUpgrade', function ($app, $version) use ($eventSource, $l) {
+		$eventSource->send('success', (string)$l->t('Updated "%s" to %s', array($app, $version)));
+	});
 	$updater->listen('\OC\Updater', 'disabledApps', function ($appList) use ($eventSource, $l) {
 		$list = array();
 		foreach ($appList as $appId) {