Remove UUID Fact

Spawned by a buy about the system.uuid fact not disappearing when the system was deleted *remotely*, we ended up deciding that this "fake" fact should just be removed and shown elsewhere in the GUI. Adding it in for display only in the client was odd behaviour and could lead to confusion when someone found that it wasn't present on the server facts.

Instead of just adding it in for display purposes, I moved it to the facts dialog in the GUI (along side the owner/environment info). It remains available in the CLI identity command.

Falling out of that change, cleaned up CLI identity output, and fixed the facts dialog in GUI to display the system info uniformly and aligned correctly. (the UUID was very long which looked very unpleasant with the old system of displaying)

Bumped the glade version for factsdialog to 2.16, this is present in one of our other glade files and should be safe as EL6 shipped with 2.18. (which is our minimum targeted OS now)