Added Object copy constructor.
Renamed Object to Model.
Reintroduced an Object class.
Fixed some naming issues in test project.
Moved Object attributes from Model to Object class.
Implemented Object copy constructor.
Merge branch 'object-enhancements'

Closes #57.
Renamed Algorithm to LineDetectionAlgorithm.
Removed unused include from mainwindow.cpp
Renamed AlgorithmConfigDialog to LineDetectionAlgorithmConfigDialog.
Merge branch 'algorithm-renaming'
Fixed some issues occured due to renaming mistakes.
merge try