Renamed the commands directory and added a script to make them easier to call.

Also deleted the get_sites script as it wasn't very useful, and renamed others
to be more meaningful.

python/src/stackdump/dataproc/get_sites.py

@@ -1,38 +0,0 @@
-#!/usr/bin/env python
-
-# This script reads a directory containing the Stack Exchange data dump and
-# returns a list of sites.
-
-import sys
-import os
-import re
-
-CONTENT_FILENAME_RE = re.compile(r'^(.+)\.7z$|^(.+)\.7z\.\d{3}$')
-
-if len(sys.argv) != 2:
-    print('One argument is expected - the path to the data dump directory.')
-    sys.exit(1)
-
-dump_path = sys.argv[1]
-print('Using the data dump path: ' + dump_path + '\n')
-
-if not os.path.exists(dump_path):
-    print('The given data dump path does not exist.')
-    sys.exit(1)
-
-# we expect it to contain an 'Content' directory
-dump_path = os.path.join(dump_path, 'Content')
-if not os.path.exists(dump_path):
-    print('The given data dump path is invalid. The Content subdirectory was expected.')
-    sys.exit(1)
-
-filenames = os.listdir(dump_path)
-sites = set()
-
-for f in filenames:
-    match = CONTENT_FILENAME_RE.match(f)
-    if match:
-        sites.add(match.group(match.lastindex))
-
-print sites
-