Add Clone Game Entry Option

[xantari]

Add a clone game entry option to the game manager that does the following:

1. Creates a new entry into the game database
2. Copies the B2S if there is one (VP only)
3. Copys any media attached to the game

Idea is if you want to keep multiple similar variants of a game on the system (same wheel image, etc) that it allows for easy setup of the clone. For instance you maybe want to keep two different versions of the same table (1.1 and 1.2 versions for instance).