unit tests for filehelper class
properties validator unit tests
Merge branch 'dev' of https://github.com/Fizgon/ic-depress into merge-branch
Merge branch 'dev' of https://github.com/adudek/ic-depress into dev

Conflicts:
	ic-depress-data-anonymisation/src/org/impressivecode/depress/data/anonymisation/AnonymisationNodeModel.java

-removed unuysed imports