Assume long-running, high-data-rate contacts have infinite capacity
This allows for adding "infinite capacity" contacts for which the capacity value is not touched by the router. Note that the bundle size limit of INT32_MAX is still in place.
Why? -> Previously, we assumed that no more than INT32_MAX bytes can be transmitted during a single contact, which is unrealistic especially for long-running/persistent contacts. The forwarding component rewrite will resolve this once and for all in a clean manner.