fix editing user bug. when password and password_confirmation are blank, it should be regarded as updating without password and password_confirmation
fix editing user bug. when password and password_confirmation are blank,
it should be regarded as updating without password and
password_confirmation

YushengLi/daikichi,5xRuby/daikichi,YushengLi/daikichi,YushengLi/daikichi,5xRuby/daikichi,5xRuby/daikichi,5xRuby/daikichi,YushengLi/daikichi