Missing Save action during edit

[vlotorev]

During the edit changes there are following actions available in the menu: Restore, Add, Delete, Rename, Discard, Publish.

Also hitting Back button opens dialog with only Discard/Cancel buttons, but no Save option.

So the only option to proceed editing the next file is publishing the whole change, which is inconvenient.

This is request to add Save action, which corresponds to Save button on Gerrit WebUI during editing a file.