Change absolute user image urls to relative

fix user images to relative

db.getSortedSetRange('users:joindate', 0, -1, function(err, uids) {
                                       
        function updateUploadedPicture(uid, next) {
                User.getUserFields(uid, ['picture', 'uploadedpicture'], function(err, userData) {
                       
                        var newPicture = userData.uploadedPicture.replace('http://coinunity.sk', '');
 
                        if(userData.uploadedPicture === userData.picture) {
                                User.setUserField(uid, 'picture', newPicture);
                        }
                       
                        User.setUserField(uid, 'uploadedPicture', newPicture, next);
                });
        }
 
        async.each(uids, updateUploadedPicture, next);
});