css: tweaked search to use category_title instead of category

git-svn-id: svn+ssh://atelier.inf.usi.ch/home/bevilj/group-1@62 a672b425-5310-4d7a-af5c-997e18724b81

site/pages/cmd/basic/cd.html

@@ -1,6 +1,6 @@
 ---
 layout: page
-category: Basic commands
+category_title: Basic commands
 tags: directory change navigate
 author: Joey Bevilacqua
 title: CD

site/pages/cmd/basic/ls.html

@@ -1,6 +1,6 @@
 ---
 layout: page
-category: Basic commands
+category_title: Basic commands
 tags: directory list
 author: Claudio Maggioni
 title: LS

site/search.json

@@ -8,10 +8,10 @@ author: Claudio Maggioni
 		{% if page.category != "nosearch" %}
     {
 			"title"    : "{{ page.title | escape }}",
-			"category" : "{{ page.category }}",
 			"tags"     : "{{ page.tags | join: ', ' }}",
 			"url"      : "{{ page.baseurl }}{{ page.url }}",
-			"date"     : "{{ page.date }}"
+			"date"     : "{{ page.date }}",
+     "category": "{{ page.category_title }}"
 		},
 		{% endif %}
   {% endfor %}