Update assets/esc.png, assets/card.png, assets/library.png,...

Update assets/esc.png, assets/card.png, assets/library.png, assets/usecases_desfirecard.png, assets/menu.png, assets/usecases_edssi_app.png, assets/usecases_hce.png, assets/usecases_edssi-kms.png, assets/usecases_desfirecard.txt, assets/usecases_edssi_app.txt, assets/usecases_edssi-kms.txt, assets/usecases_hce.txt, edssi-kms.md, campuscard-mobile-app.md, twn-libid-reader.md