Small fixes and improvements after first eval.

API.paw

src/entity/TypeDefinition.ts

src/public/batteryLevel.json

src/public/calibration.json

src/public/calibrationDate.json

src/public/temperature.json

src/router/ContextRouter.ts

src/router/GenericRouter.ts

src/router/MainRouter.ts

src/util/ContextDefinitions.ts

src/util/SchemaDefinitions.ts