API COMPLETE FOR populate_stream_profile.php (suman) (API complete)
add_comment.php (suman) (API complete)
get_users_in_stream.php (suman) (complete) (API complete)
get_users_who_like_picture.php (suman) (API complete)
get_picture_metadata.php (suman) (API complete)
get_pictures_uploaded_by_user.php (suman) (API complete)