* Alphabetically sorted includes.
* Updated copyright and license text to match across all files.
* Removed pragma once define in header files in lieu of ifdef guards.
* Duels are now dynamically created and no longer statically consumes memory.
* Removed max number of duel at once.
* Updated duel modules for multi-thread and safer management.
* Remove various statically allocated tab.
* Removed duplicate code for npc_movenpc.
* Fix few warnings.
Thanks for suggestions from @anacondaqq.
* Initial progression of moving the map-server to C++ format.
* Converted all core files to .cpp and header files to .hpp.
* Refactored the refine database parser to utilize native YAML C++.
Thanks to @Jeybla and @lighta for their help!
