Add side menu toggle

Author: skadefro

OpenFlow/src/public/index.html

@@ -126,6 +126,7 @@ <h5 class="sidebar-title">Misc management</h5>
     <div class="sticky-alerts"></div>
 
     <nav class="navbar navbar-expand-md fixed-top" ng-show="menuctrl.signedin">
+      <button class="btn" type="button" ng-click="menuctrl.toggleSidebar()"><i class="fa fa-bars" aria-hidden="true"></i></button>
       <a href="#" class="navbar-brand">
         <span translate lib="web">sitename</span>
       </a>