Jarvan/Black Cleaver

[LinSun00]

First working implem of Jarvan Q (which reduces a percentage of the target's armor):

• New methods in BaseSpell apply_buffs and deapply_buffs.
• In BaseChampion, update_champion_stats renamed restore_champion_stats. New update_champion_stats is called when updating stats after buffs are applied.
• New stats category STAT_TEMPORARY_BUFF
• ALL_CHAMPION_BASE_STATS and ALL_CHAMPION_SPELLS champion names are now normalized.

First working implem of Black Cleaver:

• BaseChampion has an apply_blackcleaver method which uses the stats gotten from BlackCleaver.get_carve_stack_stats
• BlackCleaver has deapply_buffs method to remove all stacks of BlackCleaver armor reduction
• The armor_reduction_percent of BlackCleaver is calculated so that it is equivalent to 5%,10%, 15%, 20%, 25%, 30% for 1, 2, 3, 4, 5, 6 stacks.
• Autoattacks and physical spells call apply_blackcleaver method.

[PaulQbFeng]

En fait la gestion buff/debuff tout est bien

• gestion buff en local
• tests jarvan / black cleaver verifiees
• ajout d'armor reduc percent / flat dans Stats

Mais la logique doit utiliser base_armor, bonus_armor direct et pas repasser par orig_base_stats, orig_bonus_stats

[LinSun00]

J'ai refacto @PaulQbFeng