refactored sql-module
Merge remote-tracking branch 'origin/master'

Conflicts:
	aic2014-gr3-topic4-sql/src/main/java/at/tuwien/aic2014/gr3/sql/SQLTweetProcessing.java
	aic2014-gr3-topic4-sql/src/test/java/at/tuwien/aic2014/gr3/sql/SQLTweetProcessingTest.java