Returns tags for filtering in the widgets sidebar.
The standard localized tags can be obtained by calling context.localization().getString() with one of the
following values (or similar ones which will be added in the future):
richpages.widget.tag.generic
richpages.widget.tag.charts
richpages.widget.tag.planning
richpages.widget.tag.scripting
richpages.widget.tag.workitems
richpages.widget.tag.testRuns