[ts] Update English to remove 'unfinished' marks
[qt] Replace Bitcoin->Freicoin on AddressBookPage
[qt] Replace Bitcoin->Freicoin in PaymentServer
[src] Replace Bitcoin->Freicoin in init
[qt] Replace Bitcoin->Freicoin in AboutDialog
[qt] Replace Bitcoin->Freicoin in SplashScreen
[qt] Update strings for translation
[ts] Update English
[ts] Update all