contingent_report app: income analysis coded.

This is a special request from Oginni Ololade. He will give an excel
workbook containing proof of incomes and I will return the workbook
to him with account numbers of misys TI related transactions.
old contingent account upload coded. generic upload form coded
oldcontingentreport.models: I created helper class and instance methods
another iteration of income analysis
contingent_report income analysis now includes cfc trxns
added acct number field to lc register.