new & fix

- new: switch of sftp `rm -rf` dir
- fix: sftp upload
- fix: sftp uploading progress
- opt.: editor will save content if is editing file

lib/data/store/setting.dart

@@ -111,4 +111,8 @@ class SettingStore extends PersistentStore {
   /// Otherwise, display them on the top of server detail page
   StoreProperty<bool> get moveOutServerTabFuncBtns =>
       property('moveOutServerTabFuncBtns', defaultValue: true);
+
+  /// Whether use `rm -rf` to delete directory on SFTP
+  StoreProperty<bool> get sftpRmrfDir =>
+      property('sftpRmrfDir', defaultValue: true);
 }