Fix RusMap 2.4.9 & ROS13 1.49

I am back with a new minor fix!

This time I have improved the environment near the town of Onega - ROS13 Map:

Reflections of ships in the water

Errors in the length of the terrain

Levitating soldier

Two combat vehicles embedded in the asphalt

Reflections near the shoreline

2 levitating buildings

I have also removed 2 duplicate materials from the RusMap.

The previous fix can (and should) be removed - "Fix_ROS 13 and RM 2.4.8 [1.48-1.49]"

Please see the file description for abbreviated info.

Enjoy the ride!