api4webtrees 1.15.0

API levels 27 and 28: houses and farms as places, pending facts. Everything is additive; older clients keep working.

• Level 27 – the whole GEDCOM-L _LOC record. Houses and farms are location records of their own with a type and a
  superior place (1 TYPE Hof, 1 _LOC @L1@), as GEDCOM-L and local heritage books with farm lists use them.
  GET Place now gives the _LOC record's type, its parents (the hierarchy pointers with their type and date) and
  its events (1 EVEN at the place – fire, rebuilding, sale … with type, date, notes and sources). children are
  merged from webtrees' place table and the _LOC hierarchy, each with location and type. A place that exists only
  as a _LOC in the hierarchy (a farm without recorded residents) is listed by Places?list=1 and answered by Place
  with 0 events instead of not-found. POST Place takes type and parent; with parent a place without events can
  be created. Renaming a place takes its farms along.
• Level 28 – pending facts. Facts carry pending: true while a change waits for approval (only users who see
  pending changes get true). sex is everywhere what the facts show the user, also while a change of sex is pending.
• Tests: test_hof, the test tree has two farms; the documentation is generated again.