[Glitch] Add trends UI with admin and user settings

Port 9072fe5ab6 to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/styles/components/single_column.scss

@@ -54,13 +54,24 @@
   margin-bottom: 10px;
   height: calc(100% - 20px);
   overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+
+  & > a {
+    flex: 0 0 auto;
+  }
 
   hr {
+    flex: 0 0 auto;
     border: 0;
     background: transparent;
     border-top: 1px solid lighten($ui-base-color, 4%);
     margin: 10px 0;
   }
+
+  .flex-spacer {
+    background: transparent;
+  }
 }
 
 @media screen and (min-width: 600px) {
@@ -216,7 +227,6 @@
   }
 
   .getting-started__wrapper,
-  .getting-started__trends,
   .search {
     margin-bottom: 10px;
   }