Add validation for apartment types
Created by: RujitRaval
Add validations
Goal: https://blocpower.slack.com/archives/C0BLVT01L/p1576779937001900 https://blocpower.slack.com/archives/C0BLVT01L/p1578514919001400 https://blocpower.slack.com/archives/C0338HCL7/p1576701190006500
Test:
- Pull and try to submit the questionnaire without providing any number in any apartment type.
- It should display an error message.
Issues Fixed: