ticket 3: Add test_home_view_requests
ticket 3: Add 'requests' link to home template
ticket 3: Add test_req_view
ticket 3: Add 'req.html' template
ticket 3: Add 'Request' model
ticket 3: Add middleware class 'RequestMiddleware'
ticket 3: Modify 'req' view and template to show first 10 requests
Merge branch 't3_middleware'