Replace Glyphicons with UTF-8 characters

 index.html

@@ -27,10 +27,7 @@
                    </div>
                </form>
                
                <button type="button" class="btn btn-default navbar-btn pull-right" id="refresh" disabled="disabled">
                    <span class="glyphicon glyphicon-refresh" aria-hidden="true"></span>
                    Refresh
                </button>
                <button type="button" class="btn btn-default navbar-btn pull-right" id="refresh" disabled="disabled">&#x27f3; Refresh</button>
                
                <p class="navbar-text pull-right" id="refresh-text">Initializing...</p>
            </div>