New skin page pages

Signed-off-by: Valentin Popov <valentineus@gmail.com>

_pages/404.html

@@ -1,8 +1,12 @@
 ---
 permalink: "/404.html"
 title: "404: Page not found"
-layout: page
+layout: default
 ---
 
-Sorry, we've misplaced that URL or it's pointing to something that doesn't exist.
-<a href="{{ site.baseurl | uri_escape }}">Head back home</a> to try finding it again.
+<div class="container f04">
+    <div class="content">
+        <div class="num">404</div>
+        <div class="detail">Page not found</div>
+    </div>
+</div>

_pages/about.md

@@ -1,9 +1,8 @@
 ---
 permalink: "/about.html"
-description: "Обо мне"
 title: "About"
-sidebar: true
 layout: page
+show: true
 ---
 
 There is a significant amount of subtle, yet precisely calibrated, styling to ensure that your content is emphasized while still looking aesthetically pleasing.

_pages/index.html

@@ -3,10 +3,12 @@ permalink: "/index.html"
 layout: default
 ---
 
-<!-- Header -->
-<div class="page-heading">Blog</div>
-<!-- List -->
-<ul>
+<div class="container">
+    <div class="content">
+        <!-- Header -->
+        <div class="page-heading">Blog</div>
+        <!-- List -->
+        <ul>
             {% for node in site.posts %}
                 <li class="post-item">
                     <!-- Time -->
@@ -21,4 +23,6 @@ layout: default
                     </a>
                 </li>
             {% endfor %}
-</ul>
+        </ul>
+    </div>
+</div>