Add bio fields (#6645)

* Add bio fields

- Fix #3211
- Fix #232
- Fix #121

* Display bio fields in web UI

* Fix output of links and missing fields

* Federate bio fields over ActivityPub as PropertyValue

* Improve how the fields are stored, add to Edit profile form

* Add rel=me to links in fields

Fix #121

app/javascript/styles/mastodon/components.scss

@@ -5176,3 +5176,40 @@ noscript {
     background: lighten($ui-highlight-color, 7%);
   }
 }
+
+.account__header .account__header__fields {
+  font-size: 14px;
+  line-height: 20px;
+  overflow: hidden;
+  border-collapse: collapse;
+  margin: 20px -10px -20px;
+  border-bottom: 0;
+
+  tr {
+    border-top: 1px solid lighten($ui-base-color, 8%);
+    text-align: center;
+  }
+
+  th,
+  td {
+    padding: 14px 20px;
+    vertical-align: middle;
+    max-height: 40px;
+    overflow: hidden;
+    white-space: nowrap;
+    text-overflow: ellipsis;
+  }
+
+  th {
+    color: $ui-primary-color;
+    background: darken($ui-base-color, 4%);
+    max-width: 120px;
+    font-weight: 500;
+  }
+
+  td {
+    flex: auto;
+    color: $primary-text-color;
+    background: $ui-base-color;
+  }
+}