Add response information to personal messages view

Fixes #262

src/plainui/jinja2/plainui/personal_message_show.html.j2

@@ -60,6 +60,7 @@
                   class="font-sans-serif fw-normal m-0 ps-3">
               {{ msg.timestamp | strftime }}
             </time>
+            {% if msg.has_responded %}<span class="m-0 ps-3">{{ _("you have responded") }}</span>{% endif %}
           </p>
         </div>
         <div class="card-body">{{ markdown(msg_body, border=False) }}</div>

src/plainui/locale/de/LC_MESSAGES/django.po

@@ -590,6 +590,9 @@ msgstr "Melden"
 msgid "disabled user"
 msgstr "deaktivierter User"
 
+msgid "you have responded"
+msgstr "du hast geantwortet"
+
 msgid "last login"
 msgstr "Letzter Login"
 

src/plainui/locale/en/LC_MESSAGES/django.po

@@ -590,6 +590,9 @@ msgstr ""
 msgid "disabled user"
 msgstr ""
 
+msgid "you have responded"
+msgstr ""
+
 msgid "last login"
 msgstr ""