selectCsv is now in BindingTable.

* util/derandui.py (selectCsv): Subject
Add class variables for reserved columns and rows

* util/derandui.py (RICN): Variable that will hold the Reserved initial column
number
(RIRN): Will hold the Reserved initial Row Number.
Use col 2 for derandomization element seleciton

* util/derandui.py(BindingTable.refreshCol2Header): New method that takes care
of the combobox in column2 header.
(BindingTable.refreshCol2): New Method that takes care of mirroring any column
from csv to col2.
(BindingTable.selectCsv): Call refreshCol2Header when csv is uploaded.