Recommend better method for orphaning
    
    Orphaning the package via giving it to the orphan user does not allow
    setting a reason for orphaning. That information is useful for
    potential new maintainers. Recommend the use of the Orphan button
    instead, which allows setting the reason.
    
    Also, recommend reading those notices when considering unorphaning.
    
    Also, mention that assigning bugzilla tickets to/from the orphan user
    is automatic.
    
    Fixes #103