Update so that the equal method in Path uses the correct equal method for nodes
Add ToString method in Path class
Add list of Paths in Database Data along with methods:
- AddPath
- RemovePath
Add ShortestPath method to Graph class
Add a single test method to test shoreste path implementation
Fix error when no path in graph
Add more tests for the Graph class
Merge branch 'dijkstra's_algorithm_implementation'
Merge branch 'master' of github.com:Vandborg/SW505E14-Software