Add inactive tab labels for ecclesiastical, military, and judicial historical hierarchies

[kintopp]

In the initial release, we'll only expose means for collecting and displaying data on historical administrative and ecclesiastical hierarchies. However, support for adding all four types will come later, and should be hinted at in the demo UI.

[kintopp]

@marnixvb Would it be possible to already prepare for data for all four hierarchy types now? We already have this for Opele. What's different about ecclesiastical hierarchies is that they need to also account for different religions and confessions. So, for example, within the ecclesiastical hierarchy we might have a (just for purposes of illustration 'Catholic' 1523-1588 and 1589-1624 hierarchy, and a separate 'Protestant' 1503-1534 and 1534-1609 hierarchy etc. I don't yet know exactly how to represent this in the UI but was envisioning side-by-side, horizontal tabs.

[kintopp]

Data for all Opele hierarchies will need to be added to the sample RDF.