[feature] show status edits on frontend (#3678)

* add 'edited-at' field to status info web template

* make the edited-at text italic

* small change in phrasing

web/source/css/status.css

@@ -436,6 +436,10 @@ main {
 				display: flex;
 				flex-wrap: wrap;
 				column-gap: 1rem;
+
+				.edited-at {
+					font-style: italic;
+				}
 			}
 
 			.stats-item {
@@ -443,7 +447,7 @@ main {
 				gap: 0.4rem;
 			}
 
-			.stats-item:not(.published-at) {
+			.stats-item:not(.published-at):not(.edited-at) {
 				z-index: 1;
 				user-select: none;
 			}

web/template/status_info.tmpl

@@ -26,6 +26,14 @@
                 <time datetime="{{- .CreatedAt -}}">{{- .CreatedAt | timestampPrecise -}}</time>
             </dd>
         </div>
+        {{- if .EditedAt -}}
+        <div class="stats-item edited-at text-cutoff">
+            <dt class="sr-only">Edited</dt>
+            <dd>
+                (last edited <time datetime="{{- .EditedAt -}}">{{- .EditedAt | timestampPrecise -}}</time>)
+            </dd>
+        </div>
+        {{ end }}
         <div class="stats-grouping">
             <div class="stats-item" title="Replies">
                 <dt>