Update 2018-10-23 #2: Minor features and fixes

• Added commander viewer traverse to T-90
• Added commander sights to items that are posed in AAR view
• Fixed sound of distant tanks heard from interior views
• Fixed bug where commander sights would still animate in AAR
• Fixed bug where crew AI was still running, to no effect, during AAR
• Fixed bug where gunner scanning could get stuck on the right edge of a sweep
• Fixed bug where turret traverse sound could play forever if gunner or turret were disabled
• Fixed thermal signature of CITV unit on M1A2 SEP
• Fixed thermal signatures of all ERA bricks and slat armor on T-55