Added a method to handle a picture and a method to handle file. Modfied some of the template files.
Added a picture and sample text to test get file and get image
Added imageapp and added the quixote app
Added run-imageapp.py
Modified imageapp to display latest image on index page
Added handler for cookie header
Added some imports for server.py
Added cse491.env
Fixed ref-server.py
Fixed run-imageapp.py