Tests for FirstTweetFinder + TestUtils (unused for now)
Merge branch 'master' of
https://github.com/ophirdj/Software-Design-using-API.git

Conflicts:
	twitter-knowledge-center/src/main/java/ac/il/technion/twc/api/Tweet.java
	twitter-knowledge-center/src/main/java/ac/il/technion/twc/impl/queries/FirstTweetFinder.java