clean up and simplify support for bottom navbar by automagically turning dropdowns into dropups

docs/assets/css/bootstrap.css

@@ -1867,12 +1867,12 @@ table .span24 {
   left: auto;
   right: 0;
 }
-.dropup .caret {
+.dropup .caret, .navbar-fixed-bottom .dropdown .caret {
   border-top: 0;
   border-bottom: 4px solid #000000;
   content: "\2191";
 }
-.dropup .dropdown-menu {
+.dropup .dropdown-menu, .navbar-fixed-bottom .dropdown .dropdown-menu {
   top: auto;
   bottom: 100%;
   margin-bottom: 1px;
@@ -2945,14 +2945,14 @@ button.btn.btn-small, input[type="submit"].btn.btn-small {
   top: -6px;
   left: 10px;
 }
-.navbar .dropdown-menu.bottom-up:before {
+.navbar-fixed-bottom .dropdown-menu:before {
   border-top: 7px solid #ccc;
   border-top-color: rgba(0, 0, 0, 0.2);
   border-bottom: 0;
   bottom: -7px;
   top: auto;
 }
-.navbar .dropdown-menu.bottom-up:after {
+.navbar-fixed-bottom .dropdown-menu:after {
   border-top: 6px solid #ffffff;
   border-bottom: 0;
   bottom: -6px;

docs/components.html

@@ -898,16 +898,6 @@
                 <li><a href="#">One more separated link</a></li>
               </ul>
             </li>
-            <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropup <b class="caret bottom-up"></b></a>
-              <ul class="dropdown-menu bottom-up pull-right">
-                <li><a href="#">Action</a></li>
-                <li><a href="#">Another action</a></li>
-                <li><a href="#">Something else here</a></li>
-                <li class="divider"></li>
-                <li><a href="#">Separated link</a></li>
-              </ul>
-            </li>
           </ul>
           <form class="navbar-search pull-left" action="">
             <input type="text" class="search-query span2" placeholder="Search">
@@ -915,16 +905,6 @@
           <ul class="nav pull-right">
             <li><a href="#">Link</a></li>
             <li class="divider-vertical"></li>
-            <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropup <b class="caret bottom-up"></b></a>
-              <ul class="dropdown-menu bottom-up pull-right">
-                <li><a href="#">Action</a></li>
-                <li><a href="#">Another action</a></li>
-                <li><a href="#">Something else here</a></li>
-                <li class="divider"></li>
-                <li><a href="#">Separated link</a></li>
-              </ul>
-            </li>
             <li class="dropdown">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
               <ul class="dropdown-menu">

docs/templates/pages/components.mustache

@@ -822,16 +822,6 @@
                 <li><a href="#">{{_i}}One more separated link{{/i}}</a></li>
               </ul>
             </li>
-            <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">{{_i}}Dropup{{/i}} <b class="caret bottom-up"></b></a>
-              <ul class="dropdown-menu bottom-up pull-right">
-                <li><a href="#">{{_i}}Action{{/i}}</a></li>
-                <li><a href="#">{{_i}}Another action{{/i}}</a></li>
-                <li><a href="#">{{_i}}Something else here{{/i}}</a></li>
-                <li class="divider"></li>
-                <li><a href="#">{{_i}}Separated link{{/i}}</a></li>
-              </ul>
-            </li>
           </ul>
           <form class="navbar-search pull-left" action="">
             <input type="text" class="search-query span2" placeholder="Search">
@@ -839,16 +829,6 @@
           <ul class="nav pull-right">
             <li><a href="#">{{_i}}Link{{/i}}</a></li>
             <li class="divider-vertical"></li>
-            <li class="dropdown">
-              <a href="#" class="dropdown-toggle" data-toggle="dropdown">{{_i}}Dropup{{/i}} <b class="caret bottom-up"></b></a>
-              <ul class="dropdown-menu bottom-up pull-right">
-                <li><a href="#">{{_i}}Action{{/i}}</a></li>
-                <li><a href="#">{{_i}}Another action{{/i}}</a></li>
-                <li><a href="#">{{_i}}Something else here{{/i}}</a></li>
-                <li class="divider"></li>
-                <li><a href="#">{{_i}}Separated link{{/i}}</a></li>
-              </ul>
-            </li>
             <li class="dropdown">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown">{{_i}}Dropdown{{/i}} <b class="caret"></b></a>
               <ul class="dropdown-menu">

less/dropdowns.less

@@ -126,7 +126,9 @@
 // Allow for dropdowns to go bottom up (aka, dropup-menu)
 // ------------------------------------------------------
 // Just add .dropup after the standard .dropdown class and you're set, bro.
-.dropup {
+// TODO: abstract this so that the navbar fixed styles are not placed here?
+.dropup,
+.navbar-fixed-bottom .dropdown {
   // Reverse the caret
   .caret {
     border-top: 0;

less/navbar.less

@@ -275,7 +275,7 @@
   }
 }
 // Menu position and menu caret support for dropups via extra bottom-up class
-.navbar .dropdown-menu.bottom-up {
+.navbar-fixed-bottom .dropdown-menu {
   &:before {
     border-top: 7px solid #ccc;
     border-top-color: rgba(0, 0, 0, 0.2);