jpacker_sentiment_analysis

twitter_sentiment and common_crawl_trending_topics scripts

The common_crawl_trending_topics still references a modified piggybank jar in mortar-dogfood-data which contains the ARC file loader that I used for development. I'm not sure where the loader ought to live permanently. I made a pull request to put it into the mortar piggybank, but left the mortar-dogfood-data reference in incase someone wants to test before the piggybank change gets deployed.