Removed old PHP code, migrated to Python and Flask

Update .dockerignore, .env, and 503 more files...

website/renderers/headings.py

@@ -0,0 +1,37 @@
+from typing import Optional
+
+from flask import render_template
+
+
+def render_heading(inner_html: str, level: int = 1, icon: Optional[str] = None, right_html: Optional[str] = None,
+                   anchor_id: Optional[str] = None, background_class: str = "bkgd-grid") -> str:
+    return render_template(
+        "elements/heading.jinja",
+        heading_inner_html=inner_html,
+        heading_level=level + 1,
+        heading_icon=icon,
+        heading_right_html=right_html,
+        heading_anchor_id=anchor_id,
+        heading_background_class=background_class,
+    )
+
+
+def render_h1(inner_html: str, icon: Optional[str] = None, right_html: Optional[str] = None,
+              anchor_id: Optional[str] = None, background_class: str = "bkgd-grid") -> str:
+    return render_heading(
+        inner_html, 1, icon, right_html, anchor_id, background_class
+    )
+
+
+def render_h2(inner_html: str, icon: Optional[str] = None, right_html: Optional[str] = None,
+              anchor_id: Optional[str] = None, background_class: str = "bkgd-grid") -> str:
+    return render_heading(
+        inner_html, 2, icon, right_html, anchor_id, background_class
+    )
+
+
+def render_h3(inner_html: str, icon: Optional[str] = None, right_html: Optional[str] = None,
+              anchor_id: Optional[str] = None, background_class: str = "bkgd-grid") -> str:
+    return render_heading(
+        inner_html, 3, icon, right_html, anchor_id, background_class
+    )