Starting to work on an instructor search form

1.  Added `forms.py` to hold forms.
2.  Added `util.py` for utility functions.
3.  Added a view called `match` for searching by lat/long --- will add skills and by-airport search later.

Problems:

1.  How to look up a person's airport on the fly in a list comprehension (in the `match` view)?
2.  How to pass the `persons` to the `match` using HTTP redirect (again, in `match`)?
I don't think you want to redirect here, as you're only redirecting to the same view. I would simply attach the list of persons to the template context in cases where the view is called with a POST request, then add `persons: None` to the template context in cases where the view is called with a GET request. You can handle the presence/absence of a persons list in the template. Hope that makes sense?