new: Add info about searching messages

source/new.rst

@@ -8,3 +8,8 @@ What's new in Mahara 17.10?
 Mahara is being improved from version to version. On this page, you see the **highlights** for the latest release of Mahara.
 
 You can see a `list of all new features on Launchpad  <https://bugs.launchpad.net/mahara/+bugs?field.status%3Alist=FIXCOMMITTED&field.status%3Alist=FIXRELEASED&assignee_option=any&field.milestone%3Alist=81641&field.tag=nominatedfeature+&search=Search>`_ or check out the user-focused features via the |new in Mahara 17.10| "New in Mahara 17.10" `index entries <genindex.html#N>`_.
+
+Search notifications
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+|inbox-search| You can search your notifications in your :ref:`inbox <inbox>` and :ref:`sent messages <sent_messages>`. This allows you to access specific notifications that you are looking for more easily.

source/shortcuts.rstext

@@ -310,9 +310,9 @@
 
 .. |saml discovery| image:: /images/administration/institution_saml_discovery.*
 
-.. |navigation| raw:: html
+.. |inbox-search| raw:: html
 
-   <i class="fa fa-bars fa-3x fa-pull-left" aria-hidden="true"></i>
+   <i class="fa fa-inbox fa-3x fa-pull-left" aria-hidden="true"></i>
 
 .. |theme| raw:: html