Early behavior fixups:

- Priorities are now higher number -> higher priority
- Priorities are now actually respected
- Early behaviors now print custom messages when they perform an action (Filter trigger, blacklist, poll vote, etc)
- small cleanup

src/NadekoBot/Common/ModuleBehaviors/IEarlyBehavior.cs

@@ -9,14 +9,6 @@ namespace NadekoBot.Common.ModuleBehaviors
     public interface IEarlyBehavior
     {
         int Priority { get; }
-        ModuleBehaviorType BehaviorType { get; }
-
         Task<bool> RunBehavior(IGuild guild, IUserMessage msg);
     }
-
-    public enum ModuleBehaviorType
-    {
-        Blocker,
-        Executor,
-    }
 }