Remove externally loaded fonts

It is recommended in ASF Security Policy not to use any external
resources.
"ASF projects don’t have any reason to load Google Fonts from
Google servers"
please see https://privacy.apache.org/faq/committers.html
diff --git a/custom-theme/main.html b/custom-theme/main.html
index 8092a3c..522af96 100644
--- a/custom-theme/main.html
+++ b/custom-theme/main.html
@@ -18,8 +18,7 @@
         <link href="{{ base_url }}/css/base.css" rel="stylesheet">
         <link href="{{ base_url }}/css/custom.css" rel="stylesheet">
         <link href="{{ base_url }}/css/v2.css" rel="stylesheet">
-        <link href="https://fonts.googleapis.com/css?family=Lato" rel="stylesheet">
-        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
+        <link href="{{ base_url }}/css/font-awesome-4.0.3.css" rel="stylesheet">
         {%- for path in config.extra_css %}
         <link href="{{ path }}" rel="stylesheet">
         {%- endfor %}