some reworking

config.py

@@ -1,7 +1,16 @@
 import os
 # Main config section
 class Config:
+    MAIN_PAGE_TITLE = "hydrogen site"
+
     APP_NAME = "hydrogen"
-    MAIN_PAGE_TITLE = "Selected poems"
-    OUTPUT_DIR = os.environ.get('OUTPUT_DIR') or 'public'
+    APP_DESCRIPTION = "Simplistic static site generator"
+    APP_SRC_URL = f"https://git.exocortex.ru/Exocortex/{APP_NAME}"
+    OUTPUT_DIR = 'public'
+    OUTPUT_IMG_DIR = f"{OUTPUT_DIR}/images"
+    OUTPUT_CSS_DIR = f"{OUTPUT_DIR}/css"
+    OUTPUT_JS_DIR = f"{OUTPUT_DIR}/js"
+    TEMPLATE_DIR = 'templates'
+    CONTENT_DIR = 'content'
+    STATIC_DIR = 'static'
     HEADER_IMAGE = 'static/header.jpg'