In the new lobby? No, it's still there, but it's accessed in a different way.
When you pick the board you want to add to your map, you right-click to define which of the positions on the map you want it to be in. That right-click menu also includes an option for "Set as board (rotated)".
As for the water hexes, that's a known bug in some releases, I think relating to the graphics mapping for the default Saxarba tileset. Which version are you running? And, if on Windows, did you use the Windows unzipper, or something like 7zip?