reformatting
check for null before using variable
convert anonymous callbacks to static inner classes
do not directly negate compareTo
use actual size of list for array conversion
merged develop
some more errors with "high" priority
integrate some fixes which were found by findbugs

Conflicts:
	annis-interfaces/src/main/java/annis/service/objects/RawTextWrapper.java
	annis-service/src/main/java/annis/dao/SpringAnnisDao.java
	annis-visualizers/src/main/java/annis/visualizers/component/tree/TigerTreeVisualizer.java