Fix some inaccuracies and bugs with La Tortue

[Lz3]

First, center the port more on the island. The port was located on the low ports of the island 

 

Next allow for sugar, oak logs and tobacco  buildings as these were on the island. This would be a great addition to an already PvP area as doing trading runs from your plantations to ... involves a high amount of risk but also reward 

 

Third, fix the combat within the straight. Sometimes the join circle for one nation is on the other side of the island which is very bothersome. 

 

And lastly, fix a VERY annoying bug where the AI constantly sails through the island. it is possible for players to sail inside the island as well although not straight through like the AI does (and most importantly easily out!) which hides the entire ship.