fix some broke buttons on the js page

docs/javascript.html

@@ -113,8 +113,8 @@ $('#myModal').on('show', function (e) {
               <p>One fine body&hellip;</p>
             </div>
             <div class="modal-footer">
-              <a href="#" class="btn">Close</a>
-              <a href="#" class="btn btn-primary">Save changes</a>
+              <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+              <button type="button" class="btn btn-primary">Save changes</button>
             </div>
           </div><!-- /.modal-content -->
         </div><!-- /.modal-dalog -->
@@ -132,8 +132,8 @@ $('#myModal').on('show', function (e) {
         <p>One fine body&hellip;</p>
       </div>
       <div class="modal-footer">
-        <a href="#" class="btn">Close</a>
-        <a href="#" class="btn btn-primary">Save changes</a>
+        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+        <button type="button" class="btn btn-primary">Save changes</button>
       </div>
     </div><!-- /.modal-content -->
   </div><!-- /.modal-dalog -->
@@ -156,7 +156,7 @@ $('#myModal').on('show', function (e) {
             <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula.</p>
 
             <h4>Popover in a modal</h4>
-            <p>This <a href="#" role="button" class="btn popover-test" title="A Title" data-content="And here's some amazing content. It's very engaging. right?">button</a> should trigger a popover on click.</p>
+            <p>This <a href="#" role="button" class="btn btn-default popover-test" title="A Title" data-content="And here's some amazing content. It's very engaging. right?">button</a> should trigger a popover on click.</p>
 
             <h4>Tooltips in a modal</h4>
             <p><a href="#" class="tooltip-test" title="Tooltip">This link</a> and <a href="#" class="tooltip-test" title="Tooltip">that link</a> should have tooltips on hover.</p>
@@ -175,8 +175,8 @@ $('#myModal').on('show', function (e) {
             <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
           </div>
           <div class="modal-footer">
-            <button class="btn" data-dismiss="modal">Close</button>
-            <button class="btn btn-primary">Save changes</button>
+            <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+            <button type="button" class="btn btn-primary">Save changes</button>
           </div>
 
         </div><!-- /.modal-content -->