replace rather than merge arrays in default config merge
avoid starting a new transaction if we're already in one
add be patient text
fall back to title + description if they are longer than the extracted text
remove debug prints
use single lookup hash for storage locations
Merge branch 'master' of github.com:berkmancenter/mediacloud

Conflicts:
	lib/MediaWords/DBI/Downloads.pm
	lib/MediaWords/DBI/Downloads/Store/PostgreSQL.pm