fix (Config): reorganize configuration entries.
feat (Loot) : only interesting loot

 - Loot only equipments the player can equip.
 - Loot only recipes the player has the profession for or didn't already learn.
feat (Loot) : custom rates for loot by quality

Can set the minimum drop rate for quality uncommon+ loot.
fix (Loot) : remove filtered loot from containers

Fix the bug when a container contains only filtered loot and doesn't disappear.
fix (Config) : add configuration entries for loot.
feat (Loot) : add option to limit number of same items looted
feat (AdaptiveLevel) : cap player's level on area's level.

When player enter an area, it's level is capped.
Only the stats are capped. The level displayed is still the same, so equipment is still compatible and the player doesn't lose its talents.
What is impacted :
 - Visibiliy of low-level quests
 - Quest XP reward
 - Discovery XP reward
 - Creatures aggro