Replaced the functioanlity of the TargetOverrideMatrix generator service with the ScienceTargetList generator service
Completes STT-829, part of an effort to remove TargetOverrideMatrices as an intermediary between AllocationRequests and ScienceTargetLists.
Along the way:
- Added a couple tests for the SciTL generator without overridable RMS Sensitivity
- Removed TargetOverrideConstants