Geoalignment integration - using geoalignment.json for merge
Geoalignment integration - using geoalignment.json for merge

Summary:
Added loader for geoaligment.json to cluster
Added options for merge:
  - GPS override
  - Ignore GPS
  - Add heatmap
  - Add heatmap cost

Reviewed By: YanNoun

Differential Revision: D26607600

fbshipit-source-id: 47168155f088840864f6d914bb31fa777d5c82f7

oscarlorentzon/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,oscarlorentzon/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM