Fix itemuse handling again
Fix itemuse handling again

* Ignore api_flag on handling items/materials
* Update comments and logging

KC3Kai/KC3Kai,KC3Kai/KC3Kai,sinsinpub/KC3Kai,dragonjet/KC3Kai,Yukinyaa/KC3Kai,dragonjet/KC3Kai,DynamicSTOP/KC3Kai,reinforce/KC3Kai,sinsinpub/KC3Kai,Yukinyaa/KC3Kai,KC3Kai/KC3Kai,DynamicSTOP/KC3Kai,DynamicSTOP/KC3Kai,sinsinpub/KC3Kai,reinforce/KC3Kai,reinforce/KC3Kai