[Common] Minor code cleanup
[Client] New path finding implementation
Merge pull request #78 from Kadmian/develop

[MapEditor] Refactor class 'MapSelection' to hide implementation details
[Client] Added missing a star implementation
[Client] Removed path finding algorithm interface with wrong file casing
[Client] Readded path finding algorithm
[Client] Fixed walking next to a target
[Client] Fixed tile selection on mouse over
[Client] Fixed walking to a item
[Client] Fixed consuming of click events on items
[Client] Fixed walk to avatar