Merge branch '2.3.0-wip' into 3.0.0-wip

Conflicts:
	docs/assets/css/bootstrap-responsive.css
	docs/assets/js/bootstrap-popover.js
	docs/assets/js/bootstrap.js
	docs/css.html
	docs/templates/pages/base-css.mustache
	js/bootstrap-popover.js
	less/mixins.less
	less/tooltip.less

js/bootstrap-tooltip.js

@@ -67,7 +67,7 @@
     }
 
   , getOptions: function (options) {
-      options = $.extend({}, $.fn[this.type].defaults, options, this.$element.data())
+      options = $.extend({}, $.fn[this.type].defaults, this.$element.data(), options)
 
       if (options.delay && typeof options.delay == 'number') {
         options.delay = {
@@ -152,15 +152,58 @@
             break
         }
 
-        $tip
-          .offset(tp)
-          .addClass(placement)
-          .addClass('in')
-
+        this.applyPlacement(tp, placement)
         this.$element.trigger('shown')
       }
     }
 
+  , applyPlacement: function(offset, placement){
+      var $tip = this.tip()
+        , width = $tip[0].offsetWidth
+        , height = $tip[0].offsetHeight
+        , actualWidth
+        , actualHeight
+        , delta
+        , replace
+
+      $tip
+        .offset(offset)
+        .addClass(placement)
+        .addClass('in')
+
+      actualWidth = $tip[0].offsetWidth
+      actualHeight = $tip[0].offsetHeight
+
+      if (placement == 'top' && actualHeight != height) {
+        offset.top = offset.top + height - actualHeight
+        replace = true
+      }
+
+      if (placement == 'bottom' || placement == 'top') {
+        delta = 0
+
+        if (offset.left < 0){
+          delta = offset.left * -2
+          offset.left = 0
+          $tip.offset(offset)
+          actualWidth = $tip[0].offsetWidth
+          actualHeight = $tip[0].offsetHeight
+        }
+
+        this.replaceArrow(delta - width + actualWidth, actualWidth, 'left')
+      } else {
+        this.replaceArrow(actualHeight - height, actualHeight, 'top')
+      }
+
+      if (replace) $tip.offset(offset)
+    }
+
+  , replaceArrow: function(delta, dimension, position){
+      this
+        .arrow()
+        .css(position, delta ? (50 * (1 - delta / dimension) + "%") : '')
+    }
+
   , setContent: function () {
       var $tip = this.tip()
         , title = this.getTitle()
@@ -212,7 +255,7 @@
 
   , getPosition: function () {
       var el = this.$element[0]
-      return $.extend({}, el.getBoundingClientRect ? el.getBoundingClientRect() : {
+      return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : {
         width: el.offsetWidth
       , height: el.offsetHeight
       }, this.$element.offset())
@@ -233,6 +276,10 @@
       return this.$tip = this.$tip || $(this.options.template)
     }
 
+  , arrow: function(){
+      return this.$arrow = this.$arrow || this.tip().find(".tooltip-arrow")
+    }
+
   , validate: function () {
       if (!this.$element[0].parentNode) {
         this.hide()