A separate attempt at the renderers fix, and some related changes (C4-627)

[netsettler]

• In Makefile
  • Implement psql-test.
  • Implement kibana-start-test.
  • Port renderers.py from cgap-portal except for small differences needed to preserve existing behavior.
  • Port test_renderers.py, too.
• Move INDEXER_NAMESPACE_FOR_TESTING setup from conftest.py to conftest_settings.py.
• Move ORDER from datafixtures.py to conftest_settings.py.
• Fix static help page tests like they're fixed in cgap-portal (involving changes to page.json and static_section.json in workbook-inserts.
• Mostly PEP8 fixes (a lot of them) in test_indexing.py, but also a minor change in how a mock is set up (via mock.patch.object instead of mock.patch).
• PEP8 changes (a lot) in test_search.py
• Make workbook_fixtures.py use INDEXER_NAMESPACE_FOR_TESTING.