Fixed stacking causes.
Small bug fix in cause stacking prevention.
Merge branch 'v1.1' of https://github.com/WiRCA/ARCA-tool into v1.1
Merge branch 'v1.1' of https://github.com/WiRCA/ARCA-tool into v1.1
Merge branch 'v1.1' of https://github.com/WiRCA/ARCA-tool into v1.1
Small bug fix in ClassificationRelationMap.java
Selenium test fixes related to Tutorial case.