* The immediate upshot is that "show uptime" from the console will now show uptime on all server types (user, asset, grid, etc)
* DEV: This refactoring is far from complete - only just enough to makes the "show uptime" command common accross the servers. More is needed, but in this case it's somewhat like eating cabbage, which I prefer not to do all at once
* Added a Logout message with a name on the console
* Added a *fixme* message to figure out why the current agent session is null
* After updating you may notice that there's a login <user> and also a logout<user>
* Cleaned up copyright notices in AssemblyInfo.cs's
* Added Copyright headers to a bunch of files missing them
* Replaced several common string instances with a static constant to prevent reallocation of the same strings thousands of times. "" -> String.Empty is the first such candidate.
