Small update to share the link from the timeline feed. The code for the Studio->Designer->Injections:

<script language="javascript">

 function share_link_timeline(sContentId)

 {

   var dummy = document.createElement('input');

   dummy.value = $('#bx-timeline-item-timeline-feed-' + sContentId + ' a.bx-tl-item-meta-date').attr('href');

   document.body.appendChild(dummy);

   dummy.select();

   document.execCommand('copy');

   document.body.removeChild(dummy);

 }

</script>

and the code for the "Onclick" attribute of a new menu item in the Studio->Navigation->Timeline->Item actions area:

share_link_timeline('{content_id}'); return false;