scrollspy can't handle href attributes that don't start with #

Created by: mindw0rm

Scrollspy won't work if the href attributes in the assigned target start with the current URI (e.g. href="/path/to/some.html#some-id").

This can be fixed by small changes in Scrollspy.prototype.refresh and Scrollspy.prototype.active:

 ScrollSpy.prototype.refresh = function () {
   [...]
        var href = $el.data('target') || $el.attr('href')
        /*fix part 1 (line 52 in v3.0.3): remove URI prefix if present */
        if (href[0] != '#') href = '#'+href.split('#')[1] 
        /***/
        var $href = /^#./.test(href) && $(href)
    [...]
  }

  ScrollSpy.prototype.activate = function (target) {
    [...]
    var selector = this.selector +
        '[data-target="' + target + '"],' +
        /* fix part 2 (line 101 in v3.0.3): use href$= instead of href= */
        this.selector + '[href$="' + target + '"]'
    [...]
  }```