Workspace v1 prerelease is live

The prerelease site is live at preview.gotdotnet.com!
This is only running on a single server right now and is subject to some updates and
possible downtime over the next few days, but feel free to take a look around at the
changes we've made.

A couple of known issues:

- The Windows Forms control is currently unsigned, so you may need to answer 'Yes' to trust it before it will load

Mails sent by the preview application may reference www.gotdotnet.com and therefore  
certain links within them may not work as expected  

Most importantly, changes made on preview.gotdotnet.com will not be preserved after
the prerelease period
. This site is for testing only - we took a snapshot of the
live site at the end of last week, but any changes made to Workspaces or code in source
control will not be reintegrated after the Workspaces v1 release.

We're busy fixing just a few final issues right at the moment, but everything is looking
good for the full release next week.