Merged version output & Added Environment file

It is generally a good practice in python to have all global constants in a program relegated to their own namespace, such as a constants.py or env.py module.  

This pull request creates a new file named nzbToMediaEnv.py (named in a verbose manner to prevent collisions) with a constant VERSION that is set to the latest version.  

I went ahead and added a "from nzbToMediaEnv import *" statement to all the entry points, and also added the VERSION constant to each script's startup message.