-De-hardcode elemental orb values
-De-hardcode exp items
-Change ShopChest format (temporary, drop system overhaul will replace it entirely)
-Food healing actually uses Ability data for real HP amounts
* fix healing ability of some characters to some extent
* using SerialName to replace replaceAll in avatar ability files reading
* add class HealAbilityManager
* move codes in onAbilityInvoke of class AbilityManager to class HealAbilityManager