styling: adds README styling for #4054 GFM

rhodecode/public/css/code-block.less

@@ -496,7 +496,11 b' div.codeblock {'
 .code-highlighttable,
 div.codeblock {
 
-    .code-body .markdown-block table {
+    &.readme {
+        background-color: white;
+    }
+
+    .markdown-block table {
         border-collapse: collapse;
 
         th,
@@ -506,7 +510,7 b' div.codeblock {'
         }
     }
 
-    .code-body table {
+    table {
         width: 0 !important;
         border: 0px !important;
         margin: 0;

rhodecode/public/css/summary.less

@@ -254,15 +254,3 b''
     
 }
 
-#readme {
-    width: 100%;
-
-    .readme {
-        overflow-x: auto;
-        border: @border-thickness solid @border-default-color;
-        .border-radius(@border-radius);
-    }
-    .readme_box {
-        margin: 15px;
-    }
-}

rhodecode/templates/summary/summary.html

@@ -50,8 +50,8 b''
             <a href="${h.url('files_home',repo_name=c.repo_name,revision='tip',f_path=c.readme_file)}">${c.readme_file}</a>
         </h3>
     </div>
-    <div class="readme">
-      <div class="readme_box">
+    <div class="readme codeblock">
+      <div class="readme_box markdown-block">
         ${c.readme_data|n}
       </div>
     </div>