Bug 27495: Added Accessibility advocate role in team page

Test Plan
1. Click on 'About Koha' from the home page
2.Check on the  Koha Team page that the role Accessibility advocate is
listed under the Koha release teams and that the name of the person with
the role  appears.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 638f510635)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit b9f51b4ced)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>

docs/teams.yaml

@@ -884,6 +884,8 @@ team:
         name: Fridolin Somers
       - area: Accounts
         name: Martin Renvoize
+    accessibility_advocate:
+      name: Henry Bolshaw
     bugwrangler:
       - name: Amit Gupta
       - name: Mengü Yazıcıoğlu

koha-tmpl/intranet-tmpl/prog/en/includes/about-team.inc

@@ -25,6 +25,7 @@
     [%- CASE 'vm'                    -%]Virtual machine maintainer
     [%- CASE 'database'              -%]Documentation specialist
     [%- CASE 'live_cd'               -%]Live CD maintainer
+    [%- CASE 'accessibility_advocate'-%]Accessibility advocate
   [%- END -%]
 [%- END -%]
 
@@ -215,6 +216,13 @@
         </li>
         [% END %]
 
+        [% IF t.accessibility_advocate %]
+        <li><strong>Accessibility advocate:</strong>
+           [% INCLUDE person p=t.accessibility_advocate %]
+        </li>
+        [% END %]
+
+
         [% ELSE %]
         <li><strong>Release maintainers:</strong>
             <ul>