edit reporter adding functional test and view code
"Pooja/Naval: adding GET for edit investigator"
Adding POST for edit investigator
Pooja: fixing edit investigator scenario
Pooja: giving auto-id to edit form
Pooja: Adding functional test for edit investigator
Pooja: removing auto_id from InvestigatorForm
Pooja/Naval: changing id in investigator.js
Pooja/Naval/ShriPrassanna: Fixing javascript for edit investigators
Pooja: adding permissions on edit investigator
fixing test on user registration