(refs #230)Fix markdown preview styles

src/main/twirl/repo/blob.scala.html

@@ -54,7 +54,9 @@
           @if(content.viewType == "text"){
             @defining(pathList.reverse.head) { file =>
               @if(renderableSuffixes.find(suffix => file.toLowerCase.endsWith(suffix))) {
+                <div class="box-content markdown-body" style="border: none; padding-left: 16px; padding-right: 16px;">
                   @renderMarkup(pathList, content.content.get, branch, repository, false, false)
+                </div>
               } else {
                 <pre class="prettyprint linenums blob">@content.content.get</pre>
               }