Simplify favicons and logo usage

_config.yml

@@ -14,7 +14,7 @@ description              : &description "Write an awesome description for your n
 url                      : "http://localhost:4000" # the base hostname & protocol for your site
 baseurl                  : "/test" # the subpath of your site, e.g. /blog
 email                    : "your-email@domain.com"
-logo                     : &avatar "default-thumb.png"
+logo                     : "site-logo.png"
 twitter:
   username               : &twitter "site_twitter"
 facebook:
@@ -122,7 +122,7 @@ compress_html:
 # Site Author
 author:
   name             : *name
-  avatar           : *avatar
+  avatar           : "bio-photo.jpg"
   bio              : *description
   email            : *email
   codepen          :

_includes/head.html

@@ -26,15 +26,5 @@
 <link href="//fonts.googleapis.com/css?family=PT+Sans+Narrow:400,700%7CPT+Serif:400,700,400italic" rel="stylesheet" type="text/css">
 
 <!-- Icons -->
-<!-- 16x16 -->
 <link rel="shortcut icon" href="{{ absurl }}/favicon.ico">
-<!-- 32x32 -->
 <link rel="shortcut icon" href="{{ absurl }}/favicon.png">
-<!-- 57x57 (precomposed) for iPhone 3GS, pre-2011 iPod Touch and older Android devices -->
-<link rel="apple-touch-icon-precomposed" href="{{ absurl }}/images/apple-touch-icon-precomposed.png">
-<!-- 72x72 (precomposed) for 1st generation iPad, iPad 2 and iPad mini -->
-<link rel="apple-touch-icon-precomposed" sizes="72x72" href="{{ absurl }}/images/apple-touch-icon-72x72-precomposed.png">
-<!-- 114x114 (precomposed) for iPhone 4, 4S, 5 and post-2011 iPod Touch -->
-<link rel="apple-touch-icon-precomposed" sizes="114x114" href="{{ absurl }}/images/apple-touch-icon-114x114-precomposed.png">
-<!-- 144x144 (precomposed) for iPad 3rd and 4th generation -->
-<link rel="apple-touch-icon-precomposed" sizes="144x144" href="{{ absurl }}/images/apple-touch-icon-144x144-precomposed.png">