2.2.4? Consume tweets.csv from official twitter archives

In addition JSON check, we now check for consume path ending "csv" and assume this is `tweets.csv` from an official Twitter archive's base directory.

Fields per CSV row are: 
`tweet_id, in_reply_to_status_id, in_reply_to_user_id, timestamp, source, text, retweeted_status_id, retweeted_status_user_id, retweeted_status_timestamp, expanded_urls`  
we take each `text` field into `lines`.