Use data file to maintain site navigation

- Remove top navigation links from _config.yml

_config.yml

@@ -32,19 +32,6 @@ google_verify:
 # https://ssl.bing.com/webmaster/configure/verify/ownership Option 2 content= goes here
 bing_verify:
 
-# Links to include in top navigation
-# For external links add external: true
-links:
-  - title: About
-    url: /about/
-  - title: Posts
-    url: /posts/
-  - title: Theme Setup
-    url: /theme-setup/
-  - title: Made Mistakes
-    url: http://mademistakes.com
-    external: true
-
 # http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
 timezone:    America/New_York
 future:      true