added reset wifi button

data/web/index.html

@@ -1016,6 +1016,10 @@
           Restart
         </button>
 
+        <button type="button" class="btn btn-danger system-btn" data-command="reset_wifi">
+          Reset Wifi
+        </button>
+
         <button type="button" id="updates-btn" class="btn btn-primary">
           Check for Updates
         </button>