app working, generalized the related method in tweet_slicer to handle lists instead of just words, algorithm now drops tweets where query is not actually related to the text of the tweet
cutting words out of dolphins list. lesson -- be careful about adding words to this list
ensured recommended lists are shown only if they have at least 3 tweets
tweets are now actually removed from the list if the query is unrelated to the tweet text
Merge branch 'dev'