Make map_tweets() work with Megan's TED database

[mhansen4]

Once a table like detection_status exists on the 136.177.50.40 port 5433 database, update the tweet query (lines 111-113 in map_funcs.py) to query the new table instead. You will probably be able to delete a lot of the get_tweet_coordinates() function after that, because I had to do a lot of weird things to the reverse geocodes to get them to be lat/lon coordinates.