Updating Bootstrap to v.2.0.0

roots-actions.php:  added responsive css framework file
roots-options.php: changed default css classes for bootstrap v2.0.0
roots-scripts.php: updated less to v1.2.1, changed the load order and
added new scripts for bootstrap v2.0.0

Added all of the new css, js, less asset files and updated all of the
previous ones for bootstrap v2.0.0

css/bootstrap/lib/modals.less

@@ -0,0 +1,72 @@
+// MODALS
+// ------
+
+.modal-open {
+  .dropdown-menu {  z-index: @zindexDropdown + @zindexModal; }
+  .dropdown.open { *z-index: @zindexDropdown + @zindexModal; }
+  .popover       {  z-index: @zindexPopover  + @zindexModal; }
+  .tooltip       {  z-index: @zindexTooltip  + @zindexModal; }
+}
+
+.modal-backdrop {
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: @zindexModalBackdrop;
+  background-color: @black;
+  // Fade for backdrop
+  &.fade { opacity: 0; }
+}
+
+.modal-backdrop,
+.modal-backdrop.fade.in {
+  .opacity(80);
+}
+
+.modal {
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  z-index: @zindexModal;
+  max-height: 500px;
+  overflow: auto;
+  width: 560px;
+  margin: -250px 0 0 -280px;
+  background-color: @white;
+  border: 1px solid #999;
+  border: 1px solid rgba(0,0,0,.3);
+  *border: 1px solid #999; /* IE6-7 */
+  .border-radius(6px);
+  .box-shadow(0 3px 7px rgba(0,0,0,0.3));
+  .background-clip(padding-box);
+  &.fade {
+    .transition(e('opacity .3s linear, top .3s ease-out'));
+    top: -25%;
+  }
+  &.fade.in { top: 50%; }
+}
+.modal-header {
+  padding: 9px 15px;
+  border-bottom: 1px solid #eee;
+  // Close icon
+  .close { margin-top: 2px; }
+}
+.modal-body {
+  padding: 15px;
+}
+.modal-footer {
+  padding: 14px 15px 15px;
+  margin-bottom: 0;
+  background-color: #f5f5f5;
+  border-top: 1px solid #ddd;
+  .border-radius(0 0 6px 6px);
+  .box-shadow(inset 0 1px 0 @white);
+  .clearfix();
+  .btn {
+    float: right;
+    margin-left: 5px;
+    margin-bottom: 0; // account for input[type="submit"] which gets the bottom margin like all other inputs
+  }
+}