Added MrBenn Panel

The MrBenn Toolbar Plugin is an addon for the Django Debug Toolbar which allows you to quickly open template files and views in your IDE! It would be great if this could be added to the docs so that as many people as possible find out about it, since it can probably be one of the most used panels for DJT!

Author: robertispas

docs/panels.rst

@@ -141,6 +141,15 @@ Third-party panels
 
 If you'd like to add a panel to this list, please submit a pull request!
 
+MrBenn Toolbar Plugin
+~~~~~~~~~~
+
+URL: https://github.com/andytwoods/mrbenn
+
+Path: ``mrbenn_panel.panel.MrBennPanel``
+
+Allows you to quickly open template files and views directly in your IDE! In addition to the path above, you need to add ``mrbenn_panel`` in ``INSTALLED_APPS``
+
 Flamegraph
 ~~~~~~~~~~