Search for courses by DIAL code

Context

In the event that circulars with QR codes don't reach every user for scan, there needs to be a capability to search by DIAL code. This acts as the "identifier" for the course. 

To do

• Provision to search by DIAL code on both mobile app and portal. 
• This may either be through a separate "Search by DIAL code" section or integrated as part of keyword search.