Parametrized privacy policy, unified and refined nine/non-nine landing pages (#89)

- move web sources to markdown
- integrate privacy policy template
- create and use chatmail.ini file to driving web-page generation 

Co-authored-by: missytake <missytake@systemli.org>

---------

Co-authored-by: missytake <missytake@systemli.org>

tests/test_helpers.py

@@ -0,0 +1,39 @@
+import textwrap
+
+from deploy_chatmail import build_htmlj2_from_markdown, get_ini_settings
+
+
+def test_markdown(tmp_path):
+    path = tmp_path.joinpath("privacy.md")
+    path.write_text("# privacy policy")
+    build_htmlj2_from_markdown(path)
+    output = path.with_name("privacy.html.j2")
+    assert output.exists()
+    print(output.read_text())
+
+
+def test_get_settings(tmp_path):
+    inipath = tmp_path.joinpath("chatmail.ini")
+    inipath.write_text(
+        textwrap.dedent(
+            """\
+        [config]
+
+        privacy_postal =
+            address-line1
+            address-line2
+
+        privacy_mail = privacy@example.org
+
+        privacy_pdo =
+            address-line3
+    """
+        )
+    )
+    d = get_ini_settings("x.testrun.org", inipath)
+    assert d["privacy_postal"] == "address-line1\naddress-line2"
+    assert d["privacy_mail"] == "privacy@example.org"
+    assert d["privacy_pdo"] == "address-line3"
+    assert d["mail_domain"] == "x.testrun.org"
+
+