Just updated to this build: http://ci.md-5.net/job/PvPManager/174/

When players tag someone else in combat, their nametag changes to "none". For some reason setting the option to 'none' in the config doesn't disable the feature.

It also would be nice to see the silent combat option back.

Let me know if latest build fixes this.
Silent option won't be back but maybe an alternative will be added such as deleting a message from properties file.