Change downloadable file names (#708)

* Change downloadable file names

* Remove constants because we're dynamically creating these
* Update to "communities" for the descriptor word based on team convo
* Add timestamp in 2020-09-20-0930 format because I personally think
this is the best ^.^

* Add a CLI command to run ETL Score Post so that we don't have to
  run the score generation just to get new downloadable files.
* Also make sure the old downloadable files are cleaned up on the
  run of this command.

* Remove unused library, thanks pylint!

Co-authored-by: Shelby Switzer <shelby.switzer@cms.hhs.gov>

data/data-pipeline/data_pipeline/etl/runner.py

@@ -83,6 +83,18 @@ def score_generate() -> None:
     score_gen.transform()
     score_gen.load()
 
+    # Post Score Processing
+    score_post()
+
+def score_post() -> None:
+    """Posts the score files to the local directory
+
+    Args:
+        None
+
+    Returns:
+        None
+    """
     # Post Score Processing
     score_post = PostScoreETL()
     score_post.extract()