ENGINE-255 Homogenisation of Places
ENGINE-255 Homogenization for Location History (and partially for Thngs and Actions)
ENGINE-255 Extensive refactor on Traceable Vs Positionable vs Locatable
ENGINE-253
    - Completed changes to Thng, Action, Location
    - Adapted related tests to reflect changes (geo search, etc.)
    - Created all migration scripts for changes to MongoDB collections
ENGINE-255 Uniformisation of locations - code changes in relation to code review
Merge branch 'engine-253'