Visual fixes

config/settings/base.py

docs/user_docs/source/queries.rst

gracedb/events/templatetags/timeutil.py

gracedb/search/constants.py

gracedb/search/tests/test_queries.py

gracedb/superevents/views.py

gracedb/templates/gracedb/log_entry_details.html

gracedb/templates/navbar_frag.html

gracedb/templates/superevents/log_entry_details.html

gracedb/templates/superevents/superevent_info_table.html

...b/templates/superevents/superevent_info_table_public.html