[FIX] Only submit txn once (DC-144)
[FIX] Only submit txn once (DC-144)

dncohen/ripple-client-desktop,vhpoet/ripple-client-desktop,MatthewPhinney/ripple-client-desktop,ripple/ripple-client-desktop,mrajvanshy/ripple-client-desktop,mrajvanshy/ripple-client-desktop,dncohen/ripple-client-desktop,ripple/ripple-client-desktop,MatthewPhinney/ripple-client-desktop,vhpoet/ripple-client-desktop