SSL enable config option

templates/admin/config.tmpl

@@ -17,6 +17,7 @@
                 <div><b>Run User:</b> {{.RunUser}}</div>
                 <div><b>Run Mode:</b> {{.RunMode}}</div>
                 <hr/>
+                <div><b>Enable HTTPS Clone</b> <i class="fa fa{{if .EnableHttpsClone}}-check{{end}}-square-o"></i></div>
                 <div><b>Repository Root Path:</b> {{.RepoRootPath}}</div>
             </div>
         </div>

templates/status/404.tmpl

@@ -4,5 +4,6 @@
     <p style="margin-top: 80px"><img src="/img/404.png" alt="404"/></p>
     <hr/>
     <p>Application Version: {{AppVer}}</p>
+    <p>If you think it is an error, please open an issue on <a href="https://github.com/gogits/gogs/issues/new">GitHub</a>.</p>
 </div>
 {{template "base/footer" .}}