now road more priority on pathfinding. Small refactoring oc3_gui_tilemap.hpp/cpp.
Merge branch 'master' of https://github.com/gecube/opencaesar3 into vs2008-added
Small refactoring GuiTilemap. TilePos now not ident as vector2<int>.
Fix preview building/remove tools drawing.
Now the house is able is updated to the second level. The algorithm of search of a way is corrected.