We're using console.log calls to debug server-side code. These calls should be made via a logging system that allows the developer to specify the log level (debug, error, warn, log, etc). We should be able to specify to our app via a config file which levels to output and where to stream output (file, stdout, etc)

Describe the bug
In Company page, under Selection Process tab if Personal Interview Date is not assigned then it is showing null which is certainly not a good user experience. It might be an issue with convertAllDateStringsToDateObj function [studentCtrl.js - Line 133] while converting dates values to suitable format.

To Reproduce
Steps to reproduce the behaviour: