[Glitch] Add logged-out access to the web UI

Port part of 43b5d5e38d to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

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

@@ -110,6 +110,7 @@
     &:hover {
       border-color: lighten($ui-primary-color, 4%);
       color: lighten($darker-text-color, 4%);
+      text-decoration: none;
     }
 
     &:disabled {
@@ -1756,3 +1757,4 @@ noscript {
 @import 'single_column';
 @import 'announcements';
 @import 'explore';
+@import 'signed_out';