memory leak hunting
bugfixing workspace url not correctly computed
hunting memory leaks
Merge branch 'develop' of git@github.com:Caleydo/caleydo-dev.git into
develop

Conflicts:
	org.caleydo.view.stratomex/src/org/caleydo/view/stratomex/brick/GLBrick.java
	org.caleydo.view.stratomex/src/org/caleydo/view/stratomex/brick/layout/ToolBar.java
memory leak hunting + on the fly categorical normalization
Merge branch 'develop' of git@github.com:Caleydo/caleydo-dev.git into develop