branding: Update branding-settings.conf

include default values and description for BRANDING_FONTS_CSS_URLS
setting.

snf-branding/conf/15-snf-branding-settings.conf

@@ -45,3 +45,19 @@
 # Footer message appears above Copyright message at the Compute templates
 # and the Dashboard UI. Accepts html tags
 #BRANDING_FOOTER_EXTRA_MESSAGE = ''
+
+
+# A list of webfont css urls. By default fonts are loaded from google fonts 
+# CDN. The css files served by the urls in the list should contain the 
+# appropriate css statements for `Open Sans` and `Ubuntu` font families
+# to be loaded in order to be used from the Synnefo applications styles.
+# Example statements can be found in the source of google css files content.
+# We DO NOT recommend to use custom styling in those files as they get loaded 
+# before the Synnefo theme and most probably your rules will be overriden by 
+# the default application styles. Use `//` prefix as defined 
+# in default urls if you serve Synnefo application over both http and https 
+# protocols (NOT RECOMMENDED).
+#FONTS_CSS_URLS = getattr(settings, 'BRANDING_FONTS_CSS_URLS', [
+#    '//fonts.googleapis.com/css?family=Open+Sans&subset=latin,greek-ext,greek',
+#    '//fonts.googleapis.com/css?family=Ubuntu&subset=latin,greek'
+#])