Added sprite and text for movement.

sf::Sprite and sf::Text added to IngameWindow which is lateron used to display the movement of the selected unit.
Reorderd attributes in IngameWindow.

Just changed the order of attributes in Ingaattributes in IngameWindow.
Added local pointer to TextureManager instance in IngameWindow ctor.
Added movement texture.
Now rendering movementsprite in IngameWindow.
Set up unitmovementtext in IngameWindow.

The string of unitmovementtext is now set correctly and also rendered.
Merge branch 'show-movement'

The movement of the selected unit is now display in IngameWindow.