Extend filters on territory tree, and add an AND/OR switch

[davidzbiral]

1. Filtering by editor rights should include admins and owner, who do not have explicit editorial rights to the territory but can edit all of them thanks to being admins/owner.
2. Filtering should allow a switch between AND and OR logic for the filters. (Just global one, not between specific subgroups of filters: Either all AND, or all OR.)
3. Change label "non-empty" for "with statements", because arguably, some registers are far from "empty" while they have no statements (e.g. loads of subterritories).
4. Add filter "with subterritories", to select those first-level Ts (directly under root) which have subTs.
5. Reorder the list of filter items as follows: starred, editor rights, with subterritories, with statements