add console printer

also add python-requests as explicit dependency and escape symbols in
repository name for badges in default tempate

tests/testresources/core/ahriman.ini

@@ -42,6 +42,9 @@ receivers = mail@example.com
 sender = mail@example.com
 template_path = ../web/templates/repo-index.jinja2
 
+[console]
+use_utf = yes
+
 [html]
 path =
 homepage =