Revert "Custom back url for Native Tethys apps"

[swainn]

Reverts #1030

Discovered this PR puts Tethys in an unmigratable state. Trying to run tethys manage migrate or python manage.py migrate results in the following error:

$ tethys manage migrate
WARNING:tethys.tethys_apps.admin:Unable to register CustomGroup.
WARNING:tethys.tethys_apps.admin:Unable to register CustomGroup.
Traceback (most recent call last):
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
psycopg2.errors.UndefinedColumn: column tethys_apps_tethysapp.back_url does not exist
LINE 1: ...n_apps_library", "tethys_apps_tethysapp"."order", "tethys_ap...
                                                             ^


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/jdolinar/tethysdev/tethys/tethys_portal/manage.py", line 20, in <module>
    execute_from_command_line(sys.argv)
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/__init__.py", line 413, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/base.py", line 354, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/base.py", line 398, in execute
    output = self.handle(*args, **options)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/base.py", line 89, in wrapped
    res = handle_func(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/commands/migrate.py", line 75, in handle
    self.check(databases=[database])
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/management/base.py", line 419, in check
    all_issues = checks.run_checks(
                 ^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/checks/registry.py", line 76, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/checks/urls.py", line 40, in check_url_namespaces_unique
    all_namespaces = _load_all_namespaces(resolver)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/core/checks/urls.py", line 57, in _load_all_namespaces
    url_patterns = getattr(resolver, 'url_patterns', [])
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/utils/functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/urls/resolvers.py", line 602, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
                       ^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/utils/functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/urls/resolvers.py", line 595, in urlconf_module
    return import_module(self.urlconf_name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1381, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1354, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1325, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 929, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 994, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/home/jdolinar/tethysdev/tethys/tethys_portal/urls.py", line 25, in <module>
    from tethys_apps.urls import extension_urls
  File "/home/jdolinar/tethysdev/tethys/tethys_apps/urls.py", line 34, in <module>
    standalone_app = get_configured_standalone_app()
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/tethysdev/tethys/tethys_apps/utilities.py", line 627, in get_configured_standalone_app
    app = TethysApp.objects.first()
          ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/models/query.py", line 674, in first
    for obj in (self if self.ordered else self.order_by('pk'))[:1]:
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/models/query.py", line 280, in __iter__
    self._fetch_all()
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/models/query.py", line 1324, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/models/query.py", line 51, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/models/sql/compiler.py", line 1175, in execute_sql
    cursor.execute(sql, params)
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/backends/utils.py", line 98, in execute
    return super().execute(sql, params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/backends/utils.py", line 66, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
    return executor(sql, params, many, context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/backends/utils.py", line 79, in _execute
    with self.db.wrap_database_errors:
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/home/jdolinar/miniconda3/envs/tethys/lib/python3.12/site-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
django.db.utils.ProgrammingError: column tethys_apps_tethysapp.back_url does not exist
LINE 1: ...n_apps_library", "tethys_apps_tethysapp"."order", "tethys_ap...

[swainn]

I should note that Tethys wouldn't start without running the migration b/c the back_url column didn't exist, so it was in an unusable state.