implemented old Richih wishlist about remote/uuid info

* info: Can now display info about a given uuid.
  * Added to remote/uuid info: Count of the number of keys present
    on the remote, and their size. This is rather expensive to calculate,
    so comes last and --fast will disable it.
  * Git remote info now includes the date of the last sync with the remote.

Remote/GCrypt.hs

@@ -121,7 +121,7 @@ gen' r u c gc = do
 		, availability = availabilityCalc r
 		, remotetype = remote
 		, mkUnavailable = return Nothing
-		, getInfo = return $ gitRepoInfo r
+		, getInfo = gitRepoInfo this
 		, claimUrl = Nothing
 		, checkUrl = Nothing
 	}