[imp] Help with enabling spam reporting

[HiP-HiPpO]

> I created the file imp/conf/backends.local.php with only the  
> following contents. When logging in, I see no additional option to  
> report mail as spam. How do I enable reporting?
>
> <?php
> $conf['spam']['reporting'] = true;
> $conf['spam']['spamfolder'] = Spam;
> $conf['notspam']['reporting'] = true;
> $conf['notspam']['spamfolder'] = Inbox;
> $conf['spam']['program'] = '/usr/bin/spamc -C report -u %l';
> $conf['notspam']['program'] = '/usr/bin/spamc -C revoke -u %l';
>
> Horde version 5.2.12
> Imp version 6.2.16
>
> Thank you, Art
> -

I replaced all the contents in backends.local.php with the example  
shown in this thread and I have spam reporting buttons
https://lists.horde.org/archives/horde/Week-of-Mon-20150216/053728.html