Fixed compilation with empty values

_config.yml.dist

@@ -1,15 +1,15 @@
 # (string) Title of your wiki
-title: ""
+title: 
 # (string) Description of your wiki
-description: ""
+description: 
 # (boolean) Enable/disable download buttons in sidebar
 show_downloads: true
 # (string) Specify branch rendered by gitpages allowing wiki tool buttons to work
 git_branch: "master"
 # (string) Url of logo image, it can be full, absolute or relative.
-logo_url: ""
+logo_url: 
 # (string) The UA-XXXXX-Y code from google analytic to enable GA on your wiki
-google_analytics: ""
+google_analytics: 
 # (string) folder where wiki pages are stored, it's needed for tool buttons
 wiki_folder: wiki
 # (boolean) if you're using github wiki as submodule then this config
@@ -21,7 +21,7 @@ use_prose_io: true
 # Setting google custom search engine token will enable the 
 # cse search bar (https://cse.google.it/cse/) instead of default 
 # one based on github search that could not work on forks
-google_cse_token: ""
+google_cse_token: 
 
 #
 # Jekyll configurations
@@ -57,23 +57,23 @@ plugins:
 # Check wiki documentation to learn how they work
 #
 
-inc_before_toc : ""
-inc_after_toc : ""
-inc_before_content : ""
-inc_after_content : ""
-inc_before_footer : ""
-inc_after_footer : ""
-inc_before_head : ""
-inc_after_head : ""
-inc_before_meta : ""
-inc_after_meta : ""
-inc_before_scripts : ""
-inc_after_scripts : ""
-inc_before_styles : ""
-inc_after_styles : ""
-inc_before_header : ""
-inc_after_header : ""
-inc_before_tail : ""
-inc_after_tail : ""
-inc_before_tools : ""
-inc_after_tools : ""
+inc_before_toc : 
+inc_after_toc : 
+inc_before_content : 
+inc_after_content : 
+inc_before_footer : 
+inc_after_footer : 
+inc_before_head : 
+inc_after_head : 
+inc_before_meta : 
+inc_after_meta : 
+inc_before_scripts : 
+inc_after_scripts : 
+inc_before_styles : 
+inc_after_styles : 
+inc_before_header : 
+inc_after_header : 
+inc_before_tail : 
+inc_after_tail : 
+inc_before_tools : 
+inc_after_tools :