Enabled MoveLogFormatter

Enabled MoveLogFormatter
-> This brings better i18n even to existing move log entries
Fixed the class name from r96441, it's Move not Block
Added notes about new naming conventions to DefaultSettings.php
-> didn't bother the remain existing messages now, they will keep working
Didn't remove 1movedto2*, they are still used until I commit the code which actually makes new style log entries.