Adding back button for login pages

web/templates/docs.html

@@ -7,7 +7,7 @@
     <div class="inner__wrap">
         <div class="row content">
             <div class="signup-header">
-                    <a href="/">{{ .ClientCfg.SiteName }}</a>
+                    <a href="/"><span class='fa fa-chevron-left'></span>Back</a>
                 </div>
             <div class="col-sm-12">
                 <div class="docs__page" id="docs"></div>