REL-2055: Check for and ignore unwanted values explicitly instead of using try{}catch to swallow them.
REL-2055: Use an Option.
Merge pull request #72 from fnussber/feature/REL-2055

REL-2055: IllegalArgumentException in ReportUtils
REL-2005: Update filter combobox when a new filter is imported.
REL-2015: Support for default axis in case referenced axis has been deleted.
REL-2005: Code cleanup and inform user if something goes wrong.
Merge pull request #73 from fnussber/feature/REL-2005

REL-2005: QV: Filters can not be exported/imported