Don't escape social usernames expecting + or /

Author: ashawley

_includes/social.html

@@ -7,8 +7,8 @@
   {% if site.linkedin_username %}<li><a href="https://www.linkedin.com/in/{{ site.linkedin_username | cgi_escape | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#linkedin"></use></svg> <span class="username">{{ site.linkedin_username | escape }}</span></a></li>{% endif %}
   {% if site.pinterest_username %}<li><a href="https://www.pinterest.com/{{ site.pinterest_username | cgi_escape | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#pinterest"></use></svg> <span class="username">{{ site.pinterest_username | escape }}</span></a></li>{% endif %}
   {% if site.twitter_username %}<li><a href="https://www.twitter.com/{{ site.twitter_username | cgi_escape | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#twitter"></use></svg> <span class="username">{{ site.twitter_username | escape }}</span></a></li>{% endif %}
-  {% if site.stackoverflow_username %}<li><a href="https://stackoverflow.com/users/{{ site.stackoverflow_username | cgi_escape | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#stackoverflow"></use></svg> <span class="username">{{ site.stackoverflow_username | escape }}</span></a></li>{% endif %}
+  {% if site.stackoverflow_username %}<li><a href="https://stackoverflow.com/users/{{ site.stackoverflow_username | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#stackoverflow"></use></svg> <span class="username">{{ site.stackoverflow_username | escape }}</span></a></li>{% endif %}
   {% if site.youtube_username %}<li><a href="https://youtube.com/{{ site.youtube_username | cgi_escape | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#youtube"></use></svg> <span class="username">{{ site.youtube_username | escape }}</span></a></li>{% endif %}
-  {% if site.googleplus_username %}<li><a href="https://plus.google.com/{{ site.googleplus_username | cgi_escape | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#googleplus"></use></svg> <span class="username">{{ site.googleplus_username | escape }}</span></a></li>{% endif %}
+  {% if site.googleplus_username %}<li><a href="https://plus.google.com/{{ site.googleplus_username | escape }}"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#googleplus"></use></svg> <span class="username">{{ site.googleplus_username | escape }}</span></a></li>{% endif %}
   {% if site.rss %}<li><a href="{{ site.baseurl }}/feed.xml"><svg class="svg-icon" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/assets/icons.svg#rss"></use></svg> <span>{{ site.rss | escape }}</span></a></li>{% endif %}
 </ul>