Upload datasets to HDX from UNOSAT database

Superceded by https://github.com/OCHA-DAP/hdx-scraper-unosat

Takes command line arguments:

-hk or --hdx_key: HDX api key
-hs or --hdx_site: HDX site to use. Use prod for production. Defaults to feature.
-dp or --db_params: Database connection parameters
-sd or --start_date: Add any datasets created or updated after this date. 
                     Defaults to one week prior to current date.

eg.

python run.py -sd 2018-01-01 -hs feature -dp db=unosat_db,host=localhost,user=unosat_user,password=unosat_password,port=3306 -hk xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx