Community Board refactoring:
Removed Community Server support.
Added support for Community Board externalized as DataPack scripts.
Removed most hardcoded boards and it's performance problems.
Re-introducing the chance overflow of old L2J drops. This has been discussed with Nos, and this approach seems OK.
Update sendCBHtml familly of methods to be able to bind html actions
sent to a specified npc object id.

Reviewed By: @xban1x, @NosBit
Add previously removed sendCBHtml method as deprecated method so
datapack scripts do not fail(ClanBoard community board handler in this
case). The datapack side should update the ClanBoard.java to use the new
method with the npc object id parameter as -1.
Removing deprecated/unused method.
Merge branch 'master' of https://github.com/Battlecruiser/L2J_Server into drop4

Conflicts:
	L2J_Server/java/com/l2jserver/gameserver/model/drops/GeneralDropItem.java
	L2J_Server/java/com/l2jserver/gameserver/model/drops/GroupedGeneralDropItem.java
The champions reward multiplier increases chance instead amount by
default