Update 0.9.6.1

Changelog

• Fixed an issue which prevented players from making post-battle operations with all types of in-game items in the Port.
• Fixed an incorrectly stated research price for Hull (B) of Riga.
• Fixed an issue that caused Weser bombs to sometimes deal excessive damage to Kongo.
• Balance changes have been made to the following test ships: Paolo Emilio, DD R-10.