Major update to how the MatrixIDs are read in each activity. Previously,
there were parsed strings and raw arrays in the classes. I replaced all
of this code with a new object called MatrixID.java. Along with this class
I created an inner class that gives information about the matrix's columns.
This is a static inner class that can be accessed anytime. The innder class
is called MCategory.

Signed-off-by: knennigtri <knennig213@gmail.com>