Dead module checks & improvements

1. Mark inactive region with a new  WSR_Result type (instead of in_gap which is used for stereo coverage hole).
2. Provide dead modules in a better way (JSON?).
3. Load them once.
4. Share them between events.
5. Recheck bin sizes in phi and q.
6. Check if only applying the inactive-flag when no hits are found (or are found at "large" sigma distance) improves things.
