Access to htaccess-protected piwigo gallery

[ramack]

According to a beta user comment on Gplay access to htaccess-protected galleries currently doesn't work an should be supported (response code 401 from server is handled as a kind of error)

Assigning to 1.1 for now, PR will for sure be also merged earlier, but the use case seems not to be as essential as other features.

[kg333]

I use a separate username/password as a site password to protect the gallery from being seen at all by unwanted visitors, and to prevent people who don't know the site password from registering and uploading photos.

Current functionality with $conf['guest_access'] in conjunction with all albums set to private and registration disabled does satisfy most of the use case, but requires manual management of users.

Agreed that the use case is less than essential however.