smb: rename textfield from root to subfolder

"root" or "subfolder" -> "Remote subfolder" on selected storages

missed ftp...

apps/files_external/appinfo/app.php

@@ -90,7 +90,7 @@ OC_Mount_Config::registerBackend('\OC\Files\Storage\FTP', array(
 		'host' => (string)$l->t('Host'),
 		'user' => (string)$l->t('Username'),
 		'password' => '*'.$l->t('Password'),
-		'root' => '&'.$l->t('Root'),
+		'root' => '&'.$l->t('Remote subfolder'),
 		'secure' => '!'.$l->t('Secure ftps://')),
 	'has_dependencies' => true));
 
@@ -132,7 +132,7 @@ if (!OC_Util::runningOnWindows()) {
 			'user' => (string)$l->t('Username'),
 			'password' => '*'.$l->t('Password'),
 			'share' => (string)$l->t('Share'),
-			'root' => '&'.$l->t('Root')),
+			'root' => '&'.$l->t('Remote subfolder')),
 		'has_dependencies' => true));
 
 	OC_Mount_Config::registerBackend('\OC\Files\Storage\SMB_OC', array(
@@ -142,7 +142,7 @@ if (!OC_Util::runningOnWindows()) {
 				'host' => (string)$l->t('Host'),
 				'username_as_share' => '!'.$l->t('Username as share'),
 				'share' => '&'.$l->t('Share'),
-				'root' => '&'.$l->t('Root')),
+				'root' => '&'.$l->t('Remote subfolder')),
 		'has_dependencies' => true));
 }
 
@@ -153,7 +153,7 @@ OC_Mount_Config::registerBackend('\OC\Files\Storage\DAV', array(
 		'host' => (string)$l->t('URL'),
 		'user' => (string)$l->t('Username'),
 		'password' => '*'.$l->t('Password'),
-		'root' => '&'.$l->t('Root'),
+		'root' => '&'.$l->t('Remote subfolder'),
 		'secure' => '!'.$l->t('Secure https://')),
 	'has_dependencies' => true));
 
@@ -175,7 +175,7 @@ OC_Mount_Config::registerBackend('\OC\Files\Storage\SFTP', array(
 		'host' => (string)$l->t('Host'),
 		'user' => (string)$l->t('Username'),
 		'password' => '*'.$l->t('Password'),
-		'root' => '&'.$l->t('Root'))));
+		'root' => '&'.$l->t('Remote subfolder'))));
 
 $mountProvider = new \OCA\Files_External\Config\ConfigAdapter();
 \OC::$server->getMountProviderCollection()->registerProvider($mountProvider);