'gay-of-the-day' plugin should not award bot members

[shizzard]

[shizzard]

Check if Author is a bot (marvin_pdu2_object_user:bot/1) in apps/marvin_plugin/src/gay_of_the_day/marvin_plugin_gay_of_the_day.erl:

handle_info_guild_event(Event, S0) ->
    Author = marvin_pdu2_dispatch_message_create:author(marvin_guild_pubsub:payload(Event)),
    ets:insert(S0#state.active_users, #active_user{
        user_id = marvin_pdu2_object_user:id(Author),
        user = Author
    }),
    {noreply, S0}.

[shizzard]

This should be done by filtering out bot messages.