Cleaned up HTML errors

- removed duplicate data-X on nav bar button
- removed duplicate id on the source repo button and download button

Author: sean-morris

link.html

@@ -101,17 +101,17 @@ <h3 id="searchlabel">Quick search</h3>
         <div class="col pl-md-4 topbar-main">
 
             <button id="navbar-toggler" class="navbar-toggler ml-0" type="button" data-toggle="collapse"
-                data-toggle="tooltip" data-placement="bottom" data-target=".site-navigation" aria-controls="navbar-menu"
-                aria-expanded="true" aria-label="Toggle navigation" aria-controls="site-navigation"
-                title="Toggle navigation" data-toggle="tooltip" data-placement="left">
+                data-placement="bottom" data-target=".site-navigation" aria-controls="navbar-menu"
+                aria-expanded="true" aria-label="Toggle navigation"
+                title="Toggle navigation" >
                 <i class="fas fa-bars"></i>
                 <i class="fas fa-arrow-left"></i>
                 <i class="fas fa-arrow-up"></i>
             </button>
 
 
 <div class="dropdown-buttons-trigger">
-    <button id="dropdown-buttons-trigger" class="btn btn-secondary topbarbtn" aria-label="Download this page"><i
+    <button id="download-dropdown-buttons-trigger" class="btn btn-secondary topbarbtn" aria-label="Download this page"><i
             class="fas fa-download"></i></button>
 
     <div class="dropdown-buttons">
@@ -130,7 +130,7 @@ <h3 id="searchlabel">Quick search</h3>
             <!-- Source interaction buttons -->
 
 <div class="dropdown-buttons-trigger">
-    <button id="dropdown-buttons-trigger" class="btn btn-secondary topbarbtn"
+    <button id="sourc-repo-dropdown-buttons-trigger" class="btn btn-secondary topbarbtn"
         aria-label="Connect with source repository"><i class="fab fa-github"></i></button>
     <div class="dropdown-buttons sourcebuttons">
         <a class="repository-button"
@@ -204,7 +204,6 @@ <h1>nbgitpuller link generator<a class="headerlink" href="#nbgitpuller-link-gene
               <input type="text" readonly class="form-control form-control" id="binder-link" name="auth-binder-link" placeholder="Generated Binder link appears here...">
             </div>
           </div>
-          </ul>
         </div>
 
         <div class="form-group row">