OPAL-2057: Clear selection is visible as soon as at least one item is selected
OPAL-2057: Changing type of selectAll and clearSelection from Anchor to IconAnchor
OPAL-2057: Export tables based on selected tables (all when none selected)
Merge pull request #322 from emorency/OPAL-2057-export-data

OPAL-2057: Export tables based on table selection (all when none are selected)