Add the new NumGen

Added the new and distributed NumGen, which replaces the old one. The
old implementation was based on a master server.

Tools/Random.go

@@ -11,6 +11,12 @@ func RandomInteger(max int) (rnd int) {
 	return
 }
 
+// Gets a random 64 bit float between 0.0 and 1.0 (but without 1.0).
+func RandomFloat64() (rnd float64) {
+	rnd = rand.Float64()
+	return
+}
+
 // Gets a random UUID (v4).
 func RandomGUID() (guidString string) {
 	guidString = uuid.NewV4().String()