Link changes and in-table clipboards (#4697)

* Add clipboard to tables and external link changes

* Clipboard icon added to tables for screens >1200px wide. Enables
  copying of SKU/MPN/IPN from table cells where these otherwise are
  hyperlinks

* External links now open in new tabs with noreferrer

* Move external links into separate template

* All statically rendered external links have been moved out to a new
  template.

InvenTree/part/templates/part/part_base.html

@@ -383,7 +383,7 @@
                 <tr>
                     <td><span class='fas fa-link'></span></td>
                     <td>{% trans "External Link" %}</td>
-                    <td><a href="{{ part.link }}">{{ part.link }}</a>{% include "clip.html"%}</td>
+                    <td>{% include 'clip_link.html' with link=part.link %}</td>
                 </tr>
                 {% endif %}
                 {% if part.responsible %}