remove flaky pos bottom test which is effect by unit scroll pos

dist/js/bootstrap.js

@@ -322,7 +322,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap requires jQuery'
   Carousel.prototype.pause = function (e) {
     e || (this.paused = true)
 
-    if (this.$element.find('.next, .prev').length && $.support.transition.end) {
+    if (this.$element.find('.next, .prev').length && $.support.transition) {
       this.$element.trigger($.support.transition.end)
       this.cycle(true)
     }
@@ -587,6 +587,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap requires jQuery'
       var data    = $this.data('bs.collapse')
       var options = $.extend({}, Collapse.DEFAULTS, $this.data(), typeof option == 'object' && option)
 
+      if (!data && options.toggle && option == 'show') option = !option
       if (!data) $this.data('bs.collapse', (data = new Collapse(this, options)))
       if (typeof option == 'string') data[option]()
     })

js/tests/unit/tooltip.js

@@ -387,8 +387,6 @@ $(function () {
       })
 
       test('tooltips should be placed dynamically, with the dynamic placement option', function () {
-        $(document.body).scrollTop(0) // force to top of page
-
         $.support.transition = false
         var ttContainer = $('<div id="dynamic-tt-test"/>').css({
             'height' : 400,
@@ -416,14 +414,6 @@ $(function () {
         ok($('.tooltip').is('.left'),  'right positioned tooltip is dynamically positioned left')
         rightTooltip.tooltip('hide')
 
-        var bottomTooltip = $('<div style="display: inline-block; position: absolute; bottom: 0;" rel="tooltip" title="Bottom tooltip">Bottom Dynamic Tooltip</div>')
-          .appendTo('#dynamic-tt-test')
-          .tooltip({placement: 'auto bottom'})
-          .tooltip('show')
-
-        ok($('.tooltip').is('.top'),  'bottom positioned tooltip is dynamically positioned top')
-        bottomTooltip.tooltip('hide')
-
         var leftTooltip = $('<div style="display: inline-block; position: absolute; left: 0;" rel="tooltip" title="Left tooltip">Left Dynamic Tooltip</div>')
           .appendTo('#dynamic-tt-test')
           .tooltip({placement: 'auto left'})