Moved "operations logger" to abstract solver base class
Refactored up/download routine by moving to abstract solver base class
Whitespaces
Ensures that the remote object has not been changed since movement
If remote object has been changed since last sync => detection works.
Conflict situation of two moved files is implemented
Changed from extended attribute to Uuid file property
Fixed failing move tests by fixing change token
Added and ignored integration test for move/move conflict