Lotsa numbers

[Daniel van Vugt]

The current archive release of Mir is:
     0.1.2+14.04.20131128.1-0ubuntu2

But do we really need to keep all that  date info? Surely all we really 
want is:
     0.1.2-0ubuntu2

It's just as unique, and less a jumble of numbers. It might also stop 
Launchpad from complaining:
     "Mir 0.1.2 is older than the current packaged version"...

- Daniel