I found out that Google Analytics code can be installed to the Global Settings > Code > Head and it works fine in RapidWeaver 7.
But StatsCounter code has to be installed in Global Settings > Code > Body and then it works fine. It you install the StatsCounter code to the Global Settings > Code > Head it will cause severe problems with the Scandic letters. StatCounter instructions also says that it is important to install StatCounter just inside the closing "body” tag.