allow for configuration to override the favicon

Closes #5

incorporealcms/config.py

@@ -54,3 +54,5 @@ class Config(object):
     DEFAULT_PAGE_STYLE = 'light'
     TITLE_SUFFIX = 'incorporeal.org'
     CONTACT_EMAIL = 'bss@incorporeal.org'
+
+    # specify FAVICON in your instance config.py to override the suou icon

incorporealcms/templates/base.html

@@ -9,7 +9,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
 <link rel="stylesheet" href="{{ url_for('static', filename=user_style) }}">
-<link rel="icon" href="{{ url_for('static', filename='img/favicon.png') }}">
+<link rel="icon" href="{% if config.FAVICON %}{{ config.FAVICON }}{% else %}{{ url_for('static', filename='img/favicon.png') }}{% endif %}">
 
 <div class="site-wrap">
     {% block header %}