State and district should be required when start tracking is clicked

[skieer-ssv]

Thanks for your efforts on the web app
I subconsciously just clicked on start tracking button and assumed that the tracker was on as I could see the load animation.
Later when I noticed that I was missing out on vaccination slots I saw that state and district were not selected.
Just setting those fields on required might prevent the same scenario for others.
Kindly look into it.

[yashwanthm]

Good point. Will add this soon.