Merge branch 'feature-view-button' into 'dev'

I need a view button

See merge request re2o/re2o!538

templates/buttons/view.html

@@ -0,0 +1,29 @@
+{% comment %}
+Re2o est un logiciel d'administration développé initiallement au rezometz. Il
+se veut agnostique au réseau considéré, de manière à être installable en
+quelques clics.
+
+Copyright © 2020  Hugo Levy-Falk
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+{% endcomment %}
+
+{% load i18n %}
+
+{% trans "View" as tr_view %}
+<a class="btn btn-primary btn-sm" role="button" href="{% if id %}{% url href  id %}{% else %}{% url href %}{% endif %}" title="{{ desc|default:tr_view }}">
+    <i class="fa fa-eye"></i>
+</a>
+