FIX: don't send out elided message in email notifications

UX: improved details tag for elided messages

plugins/discourse-details/assets/javascripts/details_dialect.js

@@ -23,4 +23,6 @@
     return text;
   });
 
+  Discourse.Markdown.whiteListTag("details", "class", "elided");
+
 })();

plugins/discourse-details/assets/stylesheets/details.scss

@@ -7,6 +7,11 @@ details .lightbox-wrapper {
   display: none;
 }
 
+details,
+summary {
+  outline: none;
+}
+
 summary:first-of-type {
   cursor: pointer;
   display: block;
@@ -36,3 +41,33 @@ summary::-webkit-details-marker {
 details .lazyYT-container {
   display: none;
 }
+
+
+.elided {
+  color: dark-light-choose(scale-color($primary, $lightness: 65%), scale-color($secondary, $lightness: 35%));
+
+  summary:before {
+    content: '' !important;
+  }
+
+  summary {
+    @include unselectable;
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+    color: #aaa;
+    background: #f1f1f1;
+    border: 1px solid #ddd;
+    width: 20px;
+    display: flex;
+    text-align: center;
+    vertical-align: middle;
+    line-height: 12px;
+  }
+
+  summary:hover {
+    color: #222;
+    background: #d8d8d8;
+    border-color: #cdcdcd;
+  }
+}