Updated dining.py for current dining site

[akrishan11]

• Added functions to retrieve data from the Dine on Campus API used on the dining website
• Did not include some methods included in old module for the sake of avoiding redundancy
• Included functions get_locations(), get_location_hours(), and get_location_menu()
• get_location_menu() is rather slow however this is due to making several requests to the API to ensure the location and period IDs used in the url are valid, as I noticed these changed for same location/period in the past year(hence assuming they are not static values)
• Still need to write Unit Tests, but all functions were manually tested