fix: logos config not initialized (resolves #691)

bot: make sure rescue zone icon blinking to consider bot reached rescue zone when escorting hostages (ref #688)
bot: remove hardcoded radio communication randoms, so they're now depends on bots personality
refactor: some refactoring of code

inc/planner.h

@@ -198,7 +198,7 @@ public:
    bool load ();
 
    // flush matrices to disk, so we will not rebuild them on load same map
-   void save ();
+   void save () const;
 
    // do the pathfinding
    bool find (int srcIndex, int destIndex, NodeAdderFn onAddedNode, int *pathDistance = nullptr);