Balance - Exhaust velocity increase

There were some complaints about long travel times.I thought I'll experiment a bit, so I've increased them by 1.3 times so no huge change, but I don't want to be too bold with this yet. The default sinonatrix can make it to Uranus (18AU) in 11 days, it's 14 days with the old value.
Also I'v added fuel scoop mount to the sinonatrix.