Storage handler
Merge branch 'master' of https://github.com/ophirdj/Software-Design.git

Conflicts:
	twitter-knowledge-center/pom.xml
	twitter-knowledge-center/src/main/java/ac/il/technion/twc/modules/DayHistogramModule.java
	twitter-knowledge-center/src/main/java/ac/il/technion/twc/modules/LifeTimeModule.java
	twitter-knowledge-center/src/main/java/ac/il/technion/twc/modules/MessagePropertyBuildersModule.java