Fixes eyeo/websites/help.eyeo.com#31 - Added i and em styles to reset

static/scss/_reset.scss

 // This file is part of website-defaults
 // Copyright (C) 2016-present eyeo GmbH
 //
 // website-defaults is free software: you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
 //
 // website-defaults is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 117 matching lines @@
 /* Share borders between adjacent cells (opinionated) */
 
 table
 {
   border-collapse: collapse;
   border-spacing: 0;
 }
 
 /* Normalize inline content (opinionated) */
 
+i,
+em
+{
+  font-style: italic;
+}
+
 b,
 strong
 {
   font-weight: bolder;
 }
 
 small
 {
   font-size: smaller;
 }
@@ skipping 36 matching lines @@
   /* Remove the border on images inside links in IE 10-. */
   border-style: none;
 }
 
 /* Set correct display for hidden attribute in IE 10-  */
 
 [hidden]
 {
   display: none;
 }