translation base files update 2013-04-02

- also includes a small change to a string in bitcoinrpc.cpp, which is not
  on Transifex anyway, so is safe to merge

src/bitcoinrpc.cpp

@@ -763,7 +763,8 @@ void ThreadRPCServer2(void* parg)
         else if (mapArgs.count("-daemon"))
             strWhatAmI = strprintf(_("To use the %s option"), "\"-daemon\"");
         uiInterface.ThreadSafeMessageBox(strprintf(
-            _("%s, you must set a rpcpassword in the configuration file:\n %s\n"
+            _("%s, you must set a rpcpassword in the configuration file:\n"
+              "%s\n"
               "It is recommended you use the following random password:\n"
               "rpcuser=bitcoinrpc\n"
               "rpcpassword=%s\n"