Aurora is on version 2.5.0 C#, available at the Aurora Forums.
Contact Erik on the forum for a wiki account.
Template:SupportTeamSig
Usage
This is the signature used by members of the MediaWiki support team. To use it, change your Nickname (via Special:Preferences) to contain the following (replacing USERNAME with your own username in both instances):
[[User:USERNAME|USERNAME]] {{SupportTeamSig}}
You will also need to tick the 'Treat as WikiText' box.