Add tag to log messages
Define tags for all log sources
Remove useless log messages
Rename DraggedWindow into DraggableWindow
Disable dragging for inactive pawns
Fix GameState name
Wrap game creation with try/catch
Fix log messages
Fix game status handling
Change window resolution
Add method GameState::init_gui_
Add board image with wall stocks
Add method GameState::init_walls_
Rename Pos into Node
Add node object into cmake config file
Rename Pos to Node in other files
Add setter methods into Node
Merge branch 'feature-fix-pos' into dev
Merge branch 'dev' into feature-add-wall-by-human
Add NodeUtils class

Class converts CEGUI positions into Quoridor board node and vice versa.
Add unittests.