disabled ENV display var
moved DendrogramViewer, added interface for Heatmap in order to be replaceable
disabled ENV display var
enabled tests for travis (should work now)
IR data and fixed timeseries tests
testing implementation of data reduction methods
build only master branch
draft of timeRow
Merge branch 'dev'

Conflicts:
	.travis.yml
	dataset-impl/src/main/java/org/clueminer/dataset/row/TimeRow.java
added travis build icon