Added simple command line interface. Hidden some verbose output via log.
fixed import for logger
Added rate limiting info in CLI output.
Better rate limiting handling.
added simple aggregator for classified tweets
inserted the aggregator into the workflow
small changes in the classifier
classifier now returns the probability for each class
old class removed
added sentiment field to the tweet
added WekaUtils class that manges the advanced loading of trainingdata
updated TrainingDataPreprocessor with more import methods
Merge remote-tracking branch 'remotes/origin/master' into experimentalPreprocessing

Conflicts:
	src/main/java/at/tuwien/aic/tweetanalysis/TweetAnalysis.java
	src/main/java/at/tuwien/aic/tweetanalysis/provider/TweetProvider.java
added new models and methods for loading and processing them
also integrated the new models in the command line