Skillbook announcer update + Encoded temporary mob buffs + Slot gains patch

Encoded temporary mob buffs on mob control request/spawn packets.
Improved scroll generator NPC, now testing other bucket set possibilities.
Fixed slot gain method recently updated leading to a temporary visual glitch (inventory would show as normal after relogin).
Reviewed mobid check by name, no longer trying to generate a whole mob instance for info retrieval.
Added debuff purge when applying a buyback.
Reviewed skillbook announcer not informing properly storybooks, reactor or script loots.
Fixed autoaggro not working properly as soon as a player enters the field.
Fixed "fake" mobs disappearing as soon as its controller changes.

src/client/command/commands/gm0/TimeCommand.java

@@ -25,7 +25,6 @@ package client.command.commands.gm0;
 
 import client.MapleClient;
 import client.command.Command;
-import constants.net.ServerConstants;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;