The detail information about the count of revision and the interwiki
title get moved into log params. To show the new information an
ImportLogFormatter was written, which changes the key for new log items.
This allows to show the detail information in the user language.
It also decouple the user supplied data from detail information
Change-Id: Iaa57da0fc3e20c33c94fd850cd02db96fdb32dac