don't add an artificial ./ subdir due to how os.path.relpath works

this fixes stuff like og:urls of https://foo/./ or https://foo/./page
and also removes an extra layer of depth in the breadcrumb hierarchy,
just by suppressing the '.' in relpath output at the root of pages/

fixes #21

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

tests/instance/config.json

@@ -18,7 +18,7 @@
 				"level": "DEBUG",
 				"handlers": ["console"]
 			},
-			"incorporealcms.pages": {
+			"incorporealcms.ssg": {
 				"level": "DEBUG",
 				"handlers": ["console"]
 			}

tests/instance/config.py

@@ -1,31 +0,0 @@
-"""Configure the test application.
-
-SPDX-FileCopyrightText: © 2020 Brian S. Stephan <bss@incorporeal.org>
-SPDX-License-Identifier: GPL-3.0-only
-"""
-
-LOGGING = {
-    'version': 1,
-    'formatters': {
-        'default': {
-            'format': '[%(asctime)s %(levelname)-7s %(name)s] %(message)s',
-        },
-    },
-    'handlers': {
-        'console': {
-            'level': 'DEBUG',
-            'class': 'logging.StreamHandler',
-            'formatter': 'default',
-        },
-    },
-    'loggers': {
-        'incorporealcms.mdx': {
-            'level': 'DEBUG',
-            'handlers': ['console'],
-        },
-        'incorporealcms.pages': {
-            'level': 'DEBUG',
-            'handlers': ['console'],
-        },
-    },
-}