[BUG] "Register A Business" Form: Make Protocol Mandatory on ALL URLs

[elchris]

Describe the bug When filling out information to Register a Business, a user is still allowed to enter URLs without a protocol. We must enforce that client side.

To Reproduce Steps to reproduce the behavior:

1. Go here https://www.rebuildblackbusiness.com/businesses
2. Click on 'Register a Business'
3. Scroll down to 'Website'
4. Notice that while it suggests that you enter a protocol, it does not enforce it
5. Check the box that says "Business has an ongoing donation campaign"
6. Notice the same issue with "Donation Link" field

Expected behavior No form should be allowed to be submitted without all URLs having a protocol in front of them

Actual Behavior www.foo.com is allowed and 99% of the time what people put in there.

Epilogue and Broader Context

• Note that this should be a low-hanging quick fix to the issue at hand, and very-much well worth doing.
• Eventually this work could be further improved by implementing #323
  • We could keep the input form exactly the same, but instead of submitting to AirTable, it would submit to the RBB API with the following benefits:
  • The API gives back helpful and detailed validation messages when certain conditions are not met
  • We can stop leaking our AirTable API Credentials in the client side code and http requests. This is not a good place to be.

[brianjhanson]

I can take a look at this one