Refactored Model and Loader to allow insertion of and access to the ID
tags of Gizmo objects.  Allows proper connecting of gizmos on the board,
and proper performance of other operands like Rotate, etc.
Merge branch 'master' of https://github.com/Daveyblack180/Gizmoball

Conflicts:
	src/Model/Absorber.java
	src/Model/Model.java

Merged aforementioned classes and refactored Model and Loader to
include a tag field (ID) to allow recognition of Gizmoball objects by
their ID.  This will allow the implementation of operands like Rotate,
and KeyConnect in the final product.