Add solution to Lesson2_Problem_Set.01-Carrier_List
Add solution to Lesson2_Problem_Set.02-Airport_List
Add Lesson2_Problem_Set.06-Processing_Patents
Update template for process.py
Add request_flights_data.py

Script downloads html pages for all carriers and airports.
For process.py only uploaded html files are used.
Add solution to Lesson2_Problem.03-Processing_All

The assertaion test is failed - this is because different html files are
used (more recent with more data in it). The test on Udacity is passed.